mirror of
https://github.com/django/django.git
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78f163a4fb
Thanks Jared Chung, Tom Carrick, David Smith, Nick Pope, and Mariusz Felisiak for reviews. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com> Co-authored-by: Nick Pope <nick@nickpope.me.uk>
5282 lines
216 KiB
Python
5282 lines
216 KiB
Python
import datetime
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import itertools
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import unittest
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from copy import copy
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from unittest import mock
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from django.core.exceptions import FieldError
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from django.core.management.color import no_style
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from django.db import (
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DatabaseError,
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DataError,
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IntegrityError,
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OperationalError,
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connection,
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)
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from django.db.models import (
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CASCADE,
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PROTECT,
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AutoField,
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BigAutoField,
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BigIntegerField,
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BinaryField,
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BooleanField,
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CharField,
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CheckConstraint,
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DateField,
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DateTimeField,
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DecimalField,
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DurationField,
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F,
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FloatField,
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ForeignKey,
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ForeignObject,
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Index,
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IntegerField,
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JSONField,
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ManyToManyField,
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Model,
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OneToOneField,
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OrderBy,
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PositiveIntegerField,
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Q,
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SlugField,
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SmallAutoField,
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SmallIntegerField,
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TextField,
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TimeField,
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UniqueConstraint,
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UUIDField,
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Value,
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)
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from django.db.models.fields.json import KeyTextTransform
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from django.db.models.functions import Abs, Cast, Collate, Lower, Random, Upper
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from django.db.models.indexes import IndexExpression
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from django.db.transaction import TransactionManagementError, atomic
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from django.test import (
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TransactionTestCase,
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ignore_warnings,
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skipIfDBFeature,
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skipUnlessDBFeature,
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)
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from django.test.utils import CaptureQueriesContext, isolate_apps, register_lookup
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from django.utils.deprecation import RemovedInDjango51Warning
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from .fields import CustomManyToManyField, InheritedManyToManyField, MediumBlobField
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from .models import (
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Author,
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AuthorCharFieldWithIndex,
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AuthorTextFieldWithIndex,
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AuthorWithDefaultHeight,
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AuthorWithEvenLongerName,
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AuthorWithIndexedName,
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AuthorWithUniqueName,
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AuthorWithUniqueNameAndBirthday,
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Book,
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BookForeignObj,
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BookWeak,
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BookWithLongName,
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BookWithO2O,
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BookWithoutAuthor,
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BookWithSlug,
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IntegerPK,
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Node,
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Note,
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NoteRename,
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Tag,
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TagM2MTest,
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TagUniqueRename,
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Thing,
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UniqueTest,
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new_apps,
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)
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class SchemaTests(TransactionTestCase):
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"""
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Tests for the schema-alteration code.
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Be aware that these tests are more liable than most to false results,
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as sometimes the code to check if a test has worked is almost as complex
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as the code it is testing.
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"""
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available_apps = []
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models = [
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Author,
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AuthorCharFieldWithIndex,
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AuthorTextFieldWithIndex,
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AuthorWithDefaultHeight,
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AuthorWithEvenLongerName,
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Book,
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BookWeak,
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BookWithLongName,
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BookWithO2O,
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BookWithSlug,
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IntegerPK,
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Node,
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Note,
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Tag,
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TagM2MTest,
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TagUniqueRename,
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Thing,
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UniqueTest,
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]
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# Utility functions
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def setUp(self):
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# local_models should contain test dependent model classes that will be
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# automatically removed from the app cache on test tear down.
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self.local_models = []
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# isolated_local_models contains models that are in test methods
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# decorated with @isolate_apps.
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self.isolated_local_models = []
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def tearDown(self):
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# Delete any tables made for our models
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self.delete_tables()
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new_apps.clear_cache()
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for model in new_apps.get_models():
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model._meta._expire_cache()
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if "schema" in new_apps.all_models:
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for model in self.local_models:
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for many_to_many in model._meta.many_to_many:
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through = many_to_many.remote_field.through
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if through and through._meta.auto_created:
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del new_apps.all_models["schema"][through._meta.model_name]
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del new_apps.all_models["schema"][model._meta.model_name]
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if self.isolated_local_models:
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with connection.schema_editor() as editor:
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for model in self.isolated_local_models:
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editor.delete_model(model)
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def delete_tables(self):
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"Deletes all model tables for our models for a clean test environment"
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converter = connection.introspection.identifier_converter
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with connection.schema_editor() as editor:
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connection.disable_constraint_checking()
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table_names = connection.introspection.table_names()
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if connection.features.ignores_table_name_case:
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table_names = [table_name.lower() for table_name in table_names]
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for model in itertools.chain(SchemaTests.models, self.local_models):
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tbl = converter(model._meta.db_table)
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if connection.features.ignores_table_name_case:
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tbl = tbl.lower()
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if tbl in table_names:
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editor.delete_model(model)
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table_names.remove(tbl)
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connection.enable_constraint_checking()
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def column_classes(self, model):
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with connection.cursor() as cursor:
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columns = {
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d[0]: (connection.introspection.get_field_type(d[1], d), d)
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for d in connection.introspection.get_table_description(
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cursor,
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model._meta.db_table,
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)
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}
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# SQLite has a different format for field_type
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for name, (type, desc) in columns.items():
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if isinstance(type, tuple):
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columns[name] = (type[0], desc)
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return columns
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def get_primary_key(self, table):
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with connection.cursor() as cursor:
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return connection.introspection.get_primary_key_column(cursor, table)
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def get_indexes(self, table):
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"""
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Get the indexes on the table using a new cursor.
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"""
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with connection.cursor() as cursor:
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return [
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c["columns"][0]
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for c in connection.introspection.get_constraints(
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cursor, table
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).values()
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if c["index"] and len(c["columns"]) == 1
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]
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def get_uniques(self, table):
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with connection.cursor() as cursor:
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return [
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c["columns"][0]
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for c in connection.introspection.get_constraints(
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cursor, table
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).values()
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if c["unique"] and len(c["columns"]) == 1
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]
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def get_constraints(self, table):
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"""
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Get the constraints on a table using a new cursor.
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"""
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with connection.cursor() as cursor:
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return connection.introspection.get_constraints(cursor, table)
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def get_constraints_for_column(self, model, column_name):
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constraints = self.get_constraints(model._meta.db_table)
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constraints_for_column = []
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for name, details in constraints.items():
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if details["columns"] == [column_name]:
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constraints_for_column.append(name)
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return sorted(constraints_for_column)
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def check_added_field_default(
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self,
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schema_editor,
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model,
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field,
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field_name,
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expected_default,
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cast_function=None,
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):
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with connection.cursor() as cursor:
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schema_editor.add_field(model, field)
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cursor.execute(
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"SELECT {} FROM {};".format(field_name, model._meta.db_table)
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)
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database_default = cursor.fetchall()[0][0]
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if cast_function and type(database_default) != type(expected_default):
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database_default = cast_function(database_default)
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self.assertEqual(database_default, expected_default)
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def get_constraints_count(self, table, column, fk_to):
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"""
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Return a dict with keys 'fks', 'uniques, and 'indexes' indicating the
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number of foreign keys, unique constraints, and indexes on
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`table`.`column`. The `fk_to` argument is a 2-tuple specifying the
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expected foreign key relationship's (table, column).
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"""
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with connection.cursor() as cursor:
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constraints = connection.introspection.get_constraints(cursor, table)
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counts = {"fks": 0, "uniques": 0, "indexes": 0}
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for c in constraints.values():
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if c["columns"] == [column]:
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if c["foreign_key"] == fk_to:
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counts["fks"] += 1
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if c["unique"]:
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counts["uniques"] += 1
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elif c["index"]:
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counts["indexes"] += 1
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return counts
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def get_column_collation(self, table, column):
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with connection.cursor() as cursor:
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return next(
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f.collation
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for f in connection.introspection.get_table_description(cursor, table)
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if f.name == column
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)
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def get_column_comment(self, table, column):
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with connection.cursor() as cursor:
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return next(
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f.comment
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for f in connection.introspection.get_table_description(cursor, table)
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if f.name == column
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)
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def get_table_comment(self, table):
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with connection.cursor() as cursor:
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return next(
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t.comment
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for t in connection.introspection.get_table_list(cursor)
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if t.name == table
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)
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def assert_column_comment_not_exists(self, table, column):
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with connection.cursor() as cursor:
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columns = connection.introspection.get_table_description(cursor, table)
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self.assertFalse(any([c.name == column and c.comment for c in columns]))
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def assertIndexOrder(self, table, index, order):
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constraints = self.get_constraints(table)
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self.assertIn(index, constraints)
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index_orders = constraints[index]["orders"]
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self.assertTrue(
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all(val == expected for val, expected in zip(index_orders, order))
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)
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def assertForeignKeyExists(self, model, column, expected_fk_table, field="id"):
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"""
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Fail if the FK constraint on `model.Meta.db_table`.`column` to
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`expected_fk_table`.id doesn't exist.
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"""
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if not connection.features.can_introspect_foreign_keys:
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return
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constraints = self.get_constraints(model._meta.db_table)
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constraint_fk = None
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for details in constraints.values():
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if details["columns"] == [column] and details["foreign_key"]:
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constraint_fk = details["foreign_key"]
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break
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self.assertEqual(constraint_fk, (expected_fk_table, field))
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def assertForeignKeyNotExists(self, model, column, expected_fk_table):
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if not connection.features.can_introspect_foreign_keys:
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return
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with self.assertRaises(AssertionError):
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self.assertForeignKeyExists(model, column, expected_fk_table)
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# Tests
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def test_creation_deletion(self):
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"""
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Tries creating a model's table, and then deleting it.
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"""
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with connection.schema_editor() as editor:
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# Create the table
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editor.create_model(Author)
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# The table is there
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list(Author.objects.all())
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# Clean up that table
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editor.delete_model(Author)
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# No deferred SQL should be left over.
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self.assertEqual(editor.deferred_sql, [])
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# The table is gone
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with self.assertRaises(DatabaseError):
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list(Author.objects.all())
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@skipUnlessDBFeature("supports_foreign_keys")
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def test_fk(self):
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"Creating tables out of FK order, then repointing, works"
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# Create the table
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with connection.schema_editor() as editor:
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editor.create_model(Book)
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editor.create_model(Author)
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editor.create_model(Tag)
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# Initial tables are there
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list(Author.objects.all())
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list(Book.objects.all())
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# Make sure the FK constraint is present
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with self.assertRaises(IntegrityError):
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Book.objects.create(
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author_id=1,
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title="Much Ado About Foreign Keys",
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pub_date=datetime.datetime.now(),
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)
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# Repoint the FK constraint
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old_field = Book._meta.get_field("author")
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new_field = ForeignKey(Tag, CASCADE)
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new_field.set_attributes_from_name("author")
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with connection.schema_editor() as editor:
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editor.alter_field(Book, old_field, new_field, strict=True)
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self.assertForeignKeyExists(Book, "author_id", "schema_tag")
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@skipUnlessDBFeature("can_create_inline_fk")
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def test_inline_fk(self):
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# Create some tables.
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with connection.schema_editor() as editor:
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editor.create_model(Author)
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editor.create_model(Book)
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editor.create_model(Note)
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self.assertForeignKeyNotExists(Note, "book_id", "schema_book")
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# Add a foreign key from one to the other.
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with connection.schema_editor() as editor:
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new_field = ForeignKey(Book, CASCADE)
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new_field.set_attributes_from_name("book")
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editor.add_field(Note, new_field)
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self.assertForeignKeyExists(Note, "book_id", "schema_book")
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# Creating a FK field with a constraint uses a single statement without
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# a deferred ALTER TABLE.
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self.assertFalse(
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[
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sql
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for sql in (str(statement) for statement in editor.deferred_sql)
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if sql.startswith("ALTER TABLE") and "ADD CONSTRAINT" in sql
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]
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)
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@skipUnlessDBFeature("can_create_inline_fk")
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def test_add_inline_fk_update_data(self):
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with connection.schema_editor() as editor:
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editor.create_model(Node)
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# Add an inline foreign key and update data in the same transaction.
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new_field = ForeignKey(Node, CASCADE, related_name="new_fk", null=True)
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new_field.set_attributes_from_name("new_parent_fk")
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parent = Node.objects.create()
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with connection.schema_editor() as editor:
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editor.add_field(Node, new_field)
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editor.execute("UPDATE schema_node SET new_parent_fk_id = %s;", [parent.pk])
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assertIndex = (
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self.assertIn
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if connection.features.indexes_foreign_keys
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else self.assertNotIn
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)
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assertIndex("new_parent_fk_id", self.get_indexes(Node._meta.db_table))
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@skipUnlessDBFeature(
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"can_create_inline_fk",
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"allows_multiple_constraints_on_same_fields",
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)
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@isolate_apps("schema")
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def test_add_inline_fk_index_update_data(self):
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class Node(Model):
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class Meta:
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app_label = "schema"
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with connection.schema_editor() as editor:
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editor.create_model(Node)
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# Add an inline foreign key, update data, and an index in the same
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# transaction.
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new_field = ForeignKey(Node, CASCADE, related_name="new_fk", null=True)
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new_field.set_attributes_from_name("new_parent_fk")
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parent = Node.objects.create()
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with connection.schema_editor() as editor:
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editor.add_field(Node, new_field)
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Node._meta.add_field(new_field)
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editor.execute("UPDATE schema_node SET new_parent_fk_id = %s;", [parent.pk])
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editor.add_index(
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Node, Index(fields=["new_parent_fk"], name="new_parent_inline_fk_idx")
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)
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self.assertIn("new_parent_fk_id", self.get_indexes(Node._meta.db_table))
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
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def test_char_field_with_db_index_to_fk(self):
|
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# Create the table
|
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with connection.schema_editor() as editor:
|
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editor.create_model(Author)
|
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editor.create_model(AuthorCharFieldWithIndex)
|
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# Change CharField to FK
|
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old_field = AuthorCharFieldWithIndex._meta.get_field("char_field")
|
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new_field = ForeignKey(Author, CASCADE, blank=True)
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new_field.set_attributes_from_name("char_field")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(
|
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AuthorCharFieldWithIndex, old_field, new_field, strict=True
|
|
)
|
|
self.assertForeignKeyExists(
|
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AuthorCharFieldWithIndex, "char_field_id", "schema_author"
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
@skipUnlessDBFeature("supports_index_on_text_field")
|
|
def test_text_field_with_db_index_to_fk(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
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editor.create_model(Author)
|
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editor.create_model(AuthorTextFieldWithIndex)
|
|
# Change TextField to FK
|
|
old_field = AuthorTextFieldWithIndex._meta.get_field("text_field")
|
|
new_field = ForeignKey(Author, CASCADE, blank=True)
|
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new_field.set_attributes_from_name("text_field")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(
|
|
AuthorTextFieldWithIndex, old_field, new_field, strict=True
|
|
)
|
|
self.assertForeignKeyExists(
|
|
AuthorTextFieldWithIndex, "text_field_id", "schema_author"
|
|
)
|
|
|
|
@isolate_apps("schema")
|
|
def test_char_field_pk_to_auto_field(self):
|
|
class Foo(Model):
|
|
id = CharField(max_length=255, primary_key=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
self.isolated_local_models = [Foo]
|
|
old_field = Foo._meta.get_field("id")
|
|
new_field = AutoField(primary_key=True)
|
|
new_field.set_attributes_from_name("id")
|
|
new_field.model = Foo
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Foo, old_field, new_field, strict=True)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_fk_to_proxy(self):
|
|
"Creating a FK to a proxy model creates database constraints."
|
|
|
|
class AuthorProxy(Author):
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
proxy = True
|
|
|
|
class AuthorRef(Model):
|
|
author = ForeignKey(AuthorProxy, on_delete=CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [AuthorProxy, AuthorRef]
|
|
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(AuthorRef)
|
|
self.assertForeignKeyExists(AuthorRef, "author_id", "schema_author")
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys", "can_introspect_foreign_keys")
|
|
def test_fk_db_constraint(self):
|
|
"The db_constraint parameter is respected"
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWeak)
|
|
# Initial tables are there
|
|
list(Author.objects.all())
|
|
list(Tag.objects.all())
|
|
list(BookWeak.objects.all())
|
|
self.assertForeignKeyNotExists(BookWeak, "author_id", "schema_author")
|
|
# Make a db_constraint=False FK
|
|
new_field = ForeignKey(Tag, CASCADE, db_constraint=False)
|
|
new_field.set_attributes_from_name("tag")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
self.assertForeignKeyNotExists(Author, "tag_id", "schema_tag")
|
|
# Alter to one with a constraint
|
|
new_field2 = ForeignKey(Tag, CASCADE)
|
|
new_field2.set_attributes_from_name("tag")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, new_field2, strict=True)
|
|
self.assertForeignKeyExists(Author, "tag_id", "schema_tag")
|
|
# Alter to one without a constraint again
|
|
new_field2 = ForeignKey(Tag, CASCADE)
|
|
new_field2.set_attributes_from_name("tag")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field2, new_field, strict=True)
|
|
self.assertForeignKeyNotExists(Author, "tag_id", "schema_tag")
|
|
|
|
@isolate_apps("schema")
|
|
def test_no_db_constraint_added_during_primary_key_change(self):
|
|
"""
|
|
When a primary key that's pointed to by a ForeignKey with
|
|
db_constraint=False is altered, a foreign key constraint isn't added.
|
|
"""
|
|
|
|
class Author(Model):
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class BookWeak(Model):
|
|
author = ForeignKey(Author, CASCADE, db_constraint=False)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWeak)
|
|
self.assertForeignKeyNotExists(BookWeak, "author_id", "schema_author")
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = BigAutoField(primary_key=True)
|
|
new_field.model = Author
|
|
new_field.set_attributes_from_name("id")
|
|
# @isolate_apps() and inner models are needed to have the model
|
|
# relations populated, otherwise this doesn't act as a regression test.
|
|
self.assertEqual(len(new_field.model._meta.related_objects), 1)
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertForeignKeyNotExists(BookWeak, "author_id", "schema_author")
|
|
|
|
def _test_m2m_db_constraint(self, M2MFieldClass):
|
|
class LocalAuthorWithM2M(Model):
|
|
name = CharField(max_length=255)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalAuthorWithM2M]
|
|
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
editor.create_model(LocalAuthorWithM2M)
|
|
# Initial tables are there
|
|
list(LocalAuthorWithM2M.objects.all())
|
|
list(Tag.objects.all())
|
|
# Make a db_constraint=False FK
|
|
new_field = M2MFieldClass(Tag, related_name="authors", db_constraint=False)
|
|
new_field.contribute_to_class(LocalAuthorWithM2M, "tags")
|
|
# Add the field
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(LocalAuthorWithM2M, new_field)
|
|
self.assertForeignKeyNotExists(
|
|
new_field.remote_field.through, "tag_id", "schema_tag"
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_m2m_db_constraint(self):
|
|
self._test_m2m_db_constraint(ManyToManyField)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_m2m_db_constraint_custom(self):
|
|
self._test_m2m_db_constraint(CustomManyToManyField)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_m2m_db_constraint_inherited(self):
|
|
self._test_m2m_db_constraint(InheritedManyToManyField)
|
|
|
|
def test_add_field(self):
|
|
"""
|
|
Tests adding fields to models
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure there's no age field
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("age", columns)
|
|
# Add the new field
|
|
new_field = IntegerField(null=True)
|
|
new_field.set_attributes_from_name("age")
|
|
with CaptureQueriesContext(
|
|
connection
|
|
) as ctx, connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
drop_default_sql = editor.sql_alter_column_no_default % {
|
|
"column": editor.quote_name(new_field.name),
|
|
}
|
|
self.assertFalse(
|
|
any(drop_default_sql in query["sql"] for query in ctx.captured_queries)
|
|
)
|
|
# Table is not rebuilt.
|
|
self.assertIs(
|
|
any("CREATE TABLE" in query["sql"] for query in ctx.captured_queries), False
|
|
)
|
|
self.assertIs(
|
|
any("DROP TABLE" in query["sql"] for query in ctx.captured_queries), False
|
|
)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["age"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
self.assertTrue(columns["age"][1][6])
|
|
|
|
def test_add_field_remove_field(self):
|
|
"""
|
|
Adding a field and removing it removes all deferred sql referring to it.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
# Create a table with a unique constraint on the slug field.
|
|
editor.create_model(Tag)
|
|
# Remove the slug column.
|
|
editor.remove_field(Tag, Tag._meta.get_field("slug"))
|
|
self.assertEqual(editor.deferred_sql, [])
|
|
|
|
def test_add_field_temp_default(self):
|
|
"""
|
|
Tests adding fields to models with a temporary default
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure there's no age field
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("age", columns)
|
|
# Add some rows of data
|
|
Author.objects.create(name="Andrew", height=30)
|
|
Author.objects.create(name="Andrea")
|
|
# Add a not-null field
|
|
new_field = CharField(max_length=30, default="Godwin")
|
|
new_field.set_attributes_from_name("surname")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["surname"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
self.assertEqual(
|
|
columns["surname"][1][6],
|
|
connection.features.interprets_empty_strings_as_nulls,
|
|
)
|
|
|
|
def test_add_field_temp_default_boolean(self):
|
|
"""
|
|
Tests adding fields to models with a temporary default where
|
|
the default is False. (#21783)
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure there's no age field
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("age", columns)
|
|
# Add some rows of data
|
|
Author.objects.create(name="Andrew", height=30)
|
|
Author.objects.create(name="Andrea")
|
|
# Add a not-null field
|
|
new_field = BooleanField(default=False)
|
|
new_field.set_attributes_from_name("awesome")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
# BooleanField are stored as TINYINT(1) on MySQL.
|
|
field_type = columns["awesome"][0]
|
|
self.assertEqual(
|
|
field_type, connection.features.introspected_field_types["BooleanField"]
|
|
)
|
|
|
|
def test_add_field_default_transform(self):
|
|
"""
|
|
Tests adding fields to models with a default that is not directly
|
|
valid in the database (#22581)
|
|
"""
|
|
|
|
class TestTransformField(IntegerField):
|
|
|
|
# Weird field that saves the count of items in its value
|
|
def get_default(self):
|
|
return self.default
|
|
|
|
def get_prep_value(self, value):
|
|
if value is None:
|
|
return 0
|
|
return len(value)
|
|
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add some rows of data
|
|
Author.objects.create(name="Andrew", height=30)
|
|
Author.objects.create(name="Andrea")
|
|
# Add the field with a default it needs to cast (to string in this case)
|
|
new_field = TestTransformField(default={1: 2})
|
|
new_field.set_attributes_from_name("thing")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
# Ensure the field is there
|
|
columns = self.column_classes(Author)
|
|
field_type, field_info = columns["thing"]
|
|
self.assertEqual(
|
|
field_type, connection.features.introspected_field_types["IntegerField"]
|
|
)
|
|
# Make sure the values were transformed correctly
|
|
self.assertEqual(Author.objects.extra(where=["thing = 1"]).count(), 2)
|
|
|
|
def test_add_field_o2o_nullable(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Note)
|
|
new_field = OneToOneField(Note, CASCADE, null=True)
|
|
new_field.set_attributes_from_name("note")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
self.assertIn("note_id", columns)
|
|
self.assertTrue(columns["note_id"][1][6])
|
|
|
|
def test_add_field_binary(self):
|
|
"""
|
|
Tests binary fields get a sane default (#22851)
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add the new field
|
|
new_field = BinaryField(blank=True)
|
|
new_field.set_attributes_from_name("bits")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
# MySQL annoyingly uses the same backend, so it'll come back as one of
|
|
# these two types.
|
|
self.assertIn(columns["bits"][0], ("BinaryField", "TextField"))
|
|
|
|
def test_add_field_durationfield_with_default(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
new_field = DurationField(default=datetime.timedelta(minutes=10))
|
|
new_field.set_attributes_from_name("duration")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["duration"][0],
|
|
connection.features.introspected_field_types["DurationField"],
|
|
)
|
|
|
|
@unittest.skipUnless(connection.vendor == "mysql", "MySQL specific")
|
|
def test_add_binaryfield_mediumblob(self):
|
|
"""
|
|
Test adding a custom-sized binary field on MySQL (#24846).
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add the new field with default
|
|
new_field = MediumBlobField(blank=True, default=b"123")
|
|
new_field.set_attributes_from_name("bits")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
# Introspection treats BLOBs as TextFields
|
|
self.assertEqual(columns["bits"][0], "TextField")
|
|
|
|
@isolate_apps("schema")
|
|
def test_add_auto_field(self):
|
|
class AddAutoFieldModel(Model):
|
|
name = CharField(max_length=255, primary_key=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AddAutoFieldModel)
|
|
self.isolated_local_models = [AddAutoFieldModel]
|
|
old_field = AddAutoFieldModel._meta.get_field("name")
|
|
new_field = CharField(max_length=255)
|
|
new_field.set_attributes_from_name("name")
|
|
new_field.model = AddAutoFieldModel
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(AddAutoFieldModel, old_field, new_field)
|
|
new_auto_field = AutoField(primary_key=True)
|
|
new_auto_field.set_attributes_from_name("id")
|
|
new_auto_field.model = AddAutoFieldModel()
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(AddAutoFieldModel, new_auto_field)
|
|
# Crashes on PostgreSQL when the GENERATED BY suffix is missing.
|
|
AddAutoFieldModel.objects.create(name="test")
|
|
|
|
def test_remove_field(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
with CaptureQueriesContext(connection) as ctx:
|
|
editor.remove_field(Author, Author._meta.get_field("name"))
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("name", columns)
|
|
if getattr(connection.features, "can_alter_table_drop_column", True):
|
|
# Table is not rebuilt.
|
|
self.assertIs(
|
|
any("CREATE TABLE" in query["sql"] for query in ctx.captured_queries),
|
|
False,
|
|
)
|
|
self.assertIs(
|
|
any("DROP TABLE" in query["sql"] for query in ctx.captured_queries),
|
|
False,
|
|
)
|
|
|
|
def test_remove_indexed_field(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorCharFieldWithIndex)
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_field(
|
|
AuthorCharFieldWithIndex,
|
|
AuthorCharFieldWithIndex._meta.get_field("char_field"),
|
|
)
|
|
columns = self.column_classes(AuthorCharFieldWithIndex)
|
|
self.assertNotIn("char_field", columns)
|
|
|
|
def test_alter(self):
|
|
"""
|
|
Tests simple altering of fields
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["name"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
self.assertEqual(
|
|
bool(columns["name"][1][6]),
|
|
bool(connection.features.interprets_empty_strings_as_nulls),
|
|
)
|
|
# Alter the name field to a TextField
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = TextField(null=True)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(columns["name"][0], "TextField")
|
|
self.assertTrue(columns["name"][1][6])
|
|
# Change nullability again
|
|
new_field2 = TextField(null=False)
|
|
new_field2.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, new_field2, strict=True)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(columns["name"][0], "TextField")
|
|
self.assertEqual(
|
|
bool(columns["name"][1][6]),
|
|
bool(connection.features.interprets_empty_strings_as_nulls),
|
|
)
|
|
|
|
def test_alter_auto_field_to_integer_field(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Change AutoField to IntegerField
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = IntegerField(primary_key=True)
|
|
new_field.set_attributes_from_name("id")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
# Now that ID is an IntegerField, the database raises an error if it
|
|
# isn't provided.
|
|
if not connection.features.supports_unspecified_pk:
|
|
with self.assertRaises(DatabaseError):
|
|
Author.objects.create()
|
|
|
|
def test_alter_auto_field_to_char_field(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Change AutoField to CharField
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = CharField(primary_key=True, max_length=50)
|
|
new_field.set_attributes_from_name("id")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
|
|
@isolate_apps("schema")
|
|
def test_alter_auto_field_quoted_db_column(self):
|
|
class Foo(Model):
|
|
id = AutoField(primary_key=True, db_column='"quoted_id"')
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
self.isolated_local_models = [Foo]
|
|
old_field = Foo._meta.get_field("id")
|
|
new_field = BigAutoField(primary_key=True)
|
|
new_field.model = Foo
|
|
new_field.db_column = '"quoted_id"'
|
|
new_field.set_attributes_from_name("id")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Foo, old_field, new_field, strict=True)
|
|
Foo.objects.create()
|
|
|
|
def test_alter_not_unique_field_to_primary_key(self):
|
|
# Create the table.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Change UUIDField to primary key.
|
|
old_field = Author._meta.get_field("uuid")
|
|
new_field = UUIDField(primary_key=True)
|
|
new_field.set_attributes_from_name("uuid")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_field(Author, Author._meta.get_field("id"))
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
# Redundant unique constraint is not added.
|
|
count = self.get_constraints_count(
|
|
Author._meta.db_table,
|
|
Author._meta.get_field("uuid").column,
|
|
None,
|
|
)
|
|
self.assertLessEqual(count["uniques"], 1)
|
|
|
|
@isolate_apps("schema")
|
|
def test_alter_primary_key_quoted_db_table(self):
|
|
class Foo(Model):
|
|
class Meta:
|
|
app_label = "schema"
|
|
db_table = '"foo"'
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
self.isolated_local_models = [Foo]
|
|
old_field = Foo._meta.get_field("id")
|
|
new_field = BigAutoField(primary_key=True)
|
|
new_field.model = Foo
|
|
new_field.set_attributes_from_name("id")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Foo, old_field, new_field, strict=True)
|
|
Foo.objects.create()
|
|
|
|
def test_alter_text_field(self):
|
|
# Regression for "BLOB/TEXT column 'info' can't have a default value")
|
|
# on MySQL.
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = TextField(blank=True)
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
|
|
def test_alter_text_field_to_not_null_with_default_value(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
old_field = Note._meta.get_field("address")
|
|
new_field = TextField(blank=True, default="", null=False)
|
|
new_field.set_attributes_from_name("address")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
|
|
@skipUnlessDBFeature("can_defer_constraint_checks", "can_rollback_ddl")
|
|
def test_alter_fk_checks_deferred_constraints(self):
|
|
"""
|
|
#25492 - Altering a foreign key's structure and data in the same
|
|
transaction.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Node)
|
|
old_field = Node._meta.get_field("parent")
|
|
new_field = ForeignKey(Node, CASCADE)
|
|
new_field.set_attributes_from_name("parent")
|
|
parent = Node.objects.create()
|
|
with connection.schema_editor() as editor:
|
|
# Update the parent FK to create a deferred constraint check.
|
|
Node.objects.update(parent=parent)
|
|
editor.alter_field(Node, old_field, new_field, strict=True)
|
|
|
|
@isolate_apps("schema")
|
|
def test_alter_null_with_default_value_deferred_constraints(self):
|
|
class Publisher(Model):
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Article(Model):
|
|
publisher = ForeignKey(Publisher, CASCADE)
|
|
title = CharField(max_length=50, null=True)
|
|
description = CharField(max_length=100, null=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Publisher)
|
|
editor.create_model(Article)
|
|
self.isolated_local_models = [Article, Publisher]
|
|
|
|
publisher = Publisher.objects.create()
|
|
Article.objects.create(publisher=publisher)
|
|
|
|
old_title = Article._meta.get_field("title")
|
|
new_title = CharField(max_length=50, null=False, default="")
|
|
new_title.set_attributes_from_name("title")
|
|
old_description = Article._meta.get_field("description")
|
|
new_description = CharField(max_length=100, null=False, default="")
|
|
new_description.set_attributes_from_name("description")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Article, old_title, new_title, strict=True)
|
|
editor.alter_field(Article, old_description, new_description, strict=True)
|
|
|
|
def test_alter_text_field_to_date_field(self):
|
|
"""
|
|
#25002 - Test conversion of text field to date field.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
Note.objects.create(info="1988-05-05")
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = DateField(blank=True)
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
# Make sure the field isn't nullable
|
|
columns = self.column_classes(Note)
|
|
self.assertFalse(columns["info"][1][6])
|
|
|
|
def test_alter_text_field_to_datetime_field(self):
|
|
"""
|
|
#25002 - Test conversion of text field to datetime field.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
Note.objects.create(info="1988-05-05 3:16:17.4567")
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = DateTimeField(blank=True)
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
# Make sure the field isn't nullable
|
|
columns = self.column_classes(Note)
|
|
self.assertFalse(columns["info"][1][6])
|
|
|
|
def test_alter_text_field_to_time_field(self):
|
|
"""
|
|
#25002 - Test conversion of text field to time field.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
Note.objects.create(info="3:16:17.4567")
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = TimeField(blank=True)
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
# Make sure the field isn't nullable
|
|
columns = self.column_classes(Note)
|
|
self.assertFalse(columns["info"][1][6])
|
|
|
|
@skipIfDBFeature("interprets_empty_strings_as_nulls")
|
|
def test_alter_textual_field_keep_null_status(self):
|
|
"""
|
|
Changing a field type shouldn't affect the not null status.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
with self.assertRaises(IntegrityError):
|
|
Note.objects.create(info=None)
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = CharField(max_length=50)
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
with self.assertRaises(IntegrityError):
|
|
Note.objects.create(info=None)
|
|
|
|
@skipUnlessDBFeature("interprets_empty_strings_as_nulls")
|
|
def test_alter_textual_field_not_null_to_null(self):
|
|
"""
|
|
Nullability for textual fields is preserved on databases that
|
|
interpret empty strings as NULLs.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
columns = self.column_classes(Author)
|
|
# Field is nullable.
|
|
self.assertTrue(columns["uuid"][1][6])
|
|
# Change to NOT NULL.
|
|
old_field = Author._meta.get_field("uuid")
|
|
new_field = SlugField(null=False, blank=True)
|
|
new_field.set_attributes_from_name("uuid")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Author)
|
|
# Nullability is preserved.
|
|
self.assertTrue(columns["uuid"][1][6])
|
|
|
|
def test_alter_numeric_field_keep_null_status(self):
|
|
"""
|
|
Changing a field type shouldn't affect the not null status.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(UniqueTest)
|
|
with self.assertRaises(IntegrityError):
|
|
UniqueTest.objects.create(year=None, slug="aaa")
|
|
old_field = UniqueTest._meta.get_field("year")
|
|
new_field = BigIntegerField()
|
|
new_field.set_attributes_from_name("year")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(UniqueTest, old_field, new_field, strict=True)
|
|
with self.assertRaises(IntegrityError):
|
|
UniqueTest.objects.create(year=None, slug="bbb")
|
|
|
|
def test_alter_null_to_not_null(self):
|
|
"""
|
|
#23609 - Tests handling of default values when altering from NULL to NOT NULL.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(Author)
|
|
self.assertTrue(columns["height"][1][6])
|
|
# Create some test data
|
|
Author.objects.create(name="Not null author", height=12)
|
|
Author.objects.create(name="Null author")
|
|
# Verify null value
|
|
self.assertEqual(Author.objects.get(name="Not null author").height, 12)
|
|
self.assertIsNone(Author.objects.get(name="Null author").height)
|
|
# Alter the height field to NOT NULL with default
|
|
old_field = Author._meta.get_field("height")
|
|
new_field = PositiveIntegerField(default=42)
|
|
new_field.set_attributes_from_name("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Author)
|
|
self.assertFalse(columns["height"][1][6])
|
|
# Verify default value
|
|
self.assertEqual(Author.objects.get(name="Not null author").height, 12)
|
|
self.assertEqual(Author.objects.get(name="Null author").height, 42)
|
|
|
|
def test_alter_charfield_to_null(self):
|
|
"""
|
|
#24307 - Should skip an alter statement on databases with
|
|
interprets_empty_strings_as_nulls when changing a CharField to null.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Change the CharField to null
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = copy(old_field)
|
|
new_field.null = True
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_char_field_decrease_length(self):
|
|
# Create the table.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
Author.objects.create(name="x" * 255)
|
|
# Change max_length of CharField.
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=254)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
msg = "value too long for type character varying(254)"
|
|
with self.assertRaisesMessage(DataError, msg):
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_with_custom_db_type(self):
|
|
from django.contrib.postgres.fields import ArrayField
|
|
|
|
class Foo(Model):
|
|
field = ArrayField(CharField(max_length=255))
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
self.isolated_local_models = [Foo]
|
|
old_field = Foo._meta.get_field("field")
|
|
new_field = ArrayField(CharField(max_length=16))
|
|
new_field.set_attributes_from_name("field")
|
|
new_field.model = Foo
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Foo, old_field, new_field, strict=True)
|
|
|
|
@isolate_apps("schema")
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_array_field_decrease_base_field_length(self):
|
|
from django.contrib.postgres.fields import ArrayField
|
|
|
|
class ArrayModel(Model):
|
|
field = ArrayField(CharField(max_length=16))
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(ArrayModel)
|
|
self.isolated_local_models = [ArrayModel]
|
|
ArrayModel.objects.create(field=["x" * 16])
|
|
old_field = ArrayModel._meta.get_field("field")
|
|
new_field = ArrayField(CharField(max_length=15))
|
|
new_field.set_attributes_from_name("field")
|
|
new_field.model = ArrayModel
|
|
with connection.schema_editor() as editor:
|
|
msg = "value too long for type character varying(15)"
|
|
with self.assertRaisesMessage(DataError, msg):
|
|
editor.alter_field(ArrayModel, old_field, new_field, strict=True)
|
|
|
|
@isolate_apps("schema")
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_array_field_decrease_nested_base_field_length(self):
|
|
from django.contrib.postgres.fields import ArrayField
|
|
|
|
class ArrayModel(Model):
|
|
field = ArrayField(ArrayField(CharField(max_length=16)))
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(ArrayModel)
|
|
self.isolated_local_models = [ArrayModel]
|
|
ArrayModel.objects.create(field=[["x" * 16]])
|
|
old_field = ArrayModel._meta.get_field("field")
|
|
new_field = ArrayField(ArrayField(CharField(max_length=15)))
|
|
new_field.set_attributes_from_name("field")
|
|
new_field.model = ArrayModel
|
|
with connection.schema_editor() as editor:
|
|
msg = "value too long for type character varying(15)"
|
|
with self.assertRaisesMessage(DataError, msg):
|
|
editor.alter_field(ArrayModel, old_field, new_field, strict=True)
|
|
|
|
@isolate_apps("schema")
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
@skipUnlessDBFeature(
|
|
"supports_collation_on_charfield",
|
|
"supports_non_deterministic_collations",
|
|
)
|
|
def test_db_collation_arrayfield(self):
|
|
from django.contrib.postgres.fields import ArrayField
|
|
|
|
ci_collation = "case_insensitive"
|
|
cs_collation = "en-x-icu"
|
|
|
|
def drop_collation():
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(f"DROP COLLATION IF EXISTS {ci_collation}")
|
|
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
f"CREATE COLLATION IF NOT EXISTS {ci_collation} (provider = icu, "
|
|
f"locale = 'und-u-ks-level2', deterministic = false)"
|
|
)
|
|
self.addCleanup(drop_collation)
|
|
|
|
class ArrayModel(Model):
|
|
field = ArrayField(CharField(max_length=16, db_collation=ci_collation))
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
# Create the table.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(ArrayModel)
|
|
self.isolated_local_models = [ArrayModel]
|
|
self.assertEqual(
|
|
self.get_column_collation(ArrayModel._meta.db_table, "field"),
|
|
ci_collation,
|
|
)
|
|
# Alter collation.
|
|
old_field = ArrayModel._meta.get_field("field")
|
|
new_field_cs = ArrayField(CharField(max_length=16, db_collation=cs_collation))
|
|
new_field_cs.set_attributes_from_name("field")
|
|
new_field_cs.model = ArrayField
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(ArrayModel, old_field, new_field_cs, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_collation(ArrayModel._meta.db_table, "field"),
|
|
cs_collation,
|
|
)
|
|
|
|
@isolate_apps("schema")
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
@skipUnlessDBFeature(
|
|
"supports_collation_on_charfield",
|
|
"supports_non_deterministic_collations",
|
|
)
|
|
def test_unique_with_collation_charfield(self):
|
|
ci_collation = "case_insensitive"
|
|
|
|
def drop_collation():
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(f"DROP COLLATION IF EXISTS {ci_collation}")
|
|
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
f"CREATE COLLATION IF NOT EXISTS {ci_collation} (provider = icu, "
|
|
f"locale = 'und-u-ks-level2', deterministic = false)"
|
|
)
|
|
self.addCleanup(drop_collation)
|
|
|
|
class CiCharModel(Model):
|
|
field = CharField(max_length=16, db_collation=ci_collation, unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
# Create the table.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(CiCharModel)
|
|
self.isolated_local_models = [CiCharModel]
|
|
self.assertEqual(
|
|
self.get_column_collation(CiCharModel._meta.db_table, "field"),
|
|
ci_collation,
|
|
)
|
|
self.assertIn("field", self.get_uniques(CiCharModel._meta.db_table))
|
|
|
|
def test_alter_textfield_to_null(self):
|
|
"""
|
|
#24307 - Should skip an alter statement on databases with
|
|
interprets_empty_strings_as_nulls when changing a TextField to null.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
# Change the TextField to null
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = copy(old_field)
|
|
new_field.null = True
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
|
|
def test_alter_null_to_not_null_keeping_default(self):
|
|
"""
|
|
#23738 - Can change a nullable field with default to non-nullable
|
|
with the same default.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithDefaultHeight)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(AuthorWithDefaultHeight)
|
|
self.assertTrue(columns["height"][1][6])
|
|
# Alter the height field to NOT NULL keeping the previous default
|
|
old_field = AuthorWithDefaultHeight._meta.get_field("height")
|
|
new_field = PositiveIntegerField(default=42)
|
|
new_field.set_attributes_from_name("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(
|
|
AuthorWithDefaultHeight, old_field, new_field, strict=True
|
|
)
|
|
columns = self.column_classes(AuthorWithDefaultHeight)
|
|
self.assertFalse(columns["height"][1][6])
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_alter_fk(self):
|
|
"""
|
|
Tests altering of FKs
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(Book)
|
|
self.assertEqual(
|
|
columns["author_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
self.assertForeignKeyExists(Book, "author_id", "schema_author")
|
|
# Alter the FK
|
|
old_field = Book._meta.get_field("author")
|
|
new_field = ForeignKey(Author, CASCADE, editable=False)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Book)
|
|
self.assertEqual(
|
|
columns["author_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
self.assertForeignKeyExists(Book, "author_id", "schema_author")
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_alter_to_fk(self):
|
|
"""
|
|
#24447 - Tests adding a FK constraint for an existing column
|
|
"""
|
|
|
|
class LocalBook(Model):
|
|
author = IntegerField()
|
|
title = CharField(max_length=100, db_index=True)
|
|
pub_date = DateTimeField()
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalBook]
|
|
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(LocalBook)
|
|
# Ensure no FK constraint exists
|
|
constraints = self.get_constraints(LocalBook._meta.db_table)
|
|
for details in constraints.values():
|
|
if details["foreign_key"]:
|
|
self.fail(
|
|
"Found an unexpected FK constraint to %s" % details["columns"]
|
|
)
|
|
old_field = LocalBook._meta.get_field("author")
|
|
new_field = ForeignKey(Author, CASCADE)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(LocalBook, old_field, new_field, strict=True)
|
|
self.assertForeignKeyExists(LocalBook, "author_id", "schema_author")
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys", "can_introspect_foreign_keys")
|
|
def test_alter_o2o_to_fk(self):
|
|
"""
|
|
#24163 - Tests altering of OneToOneField to ForeignKey
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithO2O)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(BookWithO2O)
|
|
self.assertEqual(
|
|
columns["author_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
# Ensure the field is unique
|
|
author = Author.objects.create(name="Joe")
|
|
BookWithO2O.objects.create(
|
|
author=author, title="Django 1", pub_date=datetime.datetime.now()
|
|
)
|
|
with self.assertRaises(IntegrityError):
|
|
BookWithO2O.objects.create(
|
|
author=author, title="Django 2", pub_date=datetime.datetime.now()
|
|
)
|
|
BookWithO2O.objects.all().delete()
|
|
self.assertForeignKeyExists(BookWithO2O, "author_id", "schema_author")
|
|
# Alter the OneToOneField to ForeignKey
|
|
old_field = BookWithO2O._meta.get_field("author")
|
|
new_field = ForeignKey(Author, CASCADE)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Book)
|
|
self.assertEqual(
|
|
columns["author_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
# Ensure the field is not unique anymore
|
|
Book.objects.create(
|
|
author=author, title="Django 1", pub_date=datetime.datetime.now()
|
|
)
|
|
Book.objects.create(
|
|
author=author, title="Django 2", pub_date=datetime.datetime.now()
|
|
)
|
|
self.assertForeignKeyExists(Book, "author_id", "schema_author")
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys", "can_introspect_foreign_keys")
|
|
def test_alter_fk_to_o2o(self):
|
|
"""
|
|
#24163 - Tests altering of ForeignKey to OneToOneField
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(Book)
|
|
self.assertEqual(
|
|
columns["author_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
# Ensure the field is not unique
|
|
author = Author.objects.create(name="Joe")
|
|
Book.objects.create(
|
|
author=author, title="Django 1", pub_date=datetime.datetime.now()
|
|
)
|
|
Book.objects.create(
|
|
author=author, title="Django 2", pub_date=datetime.datetime.now()
|
|
)
|
|
Book.objects.all().delete()
|
|
self.assertForeignKeyExists(Book, "author_id", "schema_author")
|
|
# Alter the ForeignKey to OneToOneField
|
|
old_field = Book._meta.get_field("author")
|
|
new_field = OneToOneField(Author, CASCADE)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, old_field, new_field, strict=True)
|
|
columns = self.column_classes(BookWithO2O)
|
|
self.assertEqual(
|
|
columns["author_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
# Ensure the field is unique now
|
|
BookWithO2O.objects.create(
|
|
author=author, title="Django 1", pub_date=datetime.datetime.now()
|
|
)
|
|
with self.assertRaises(IntegrityError):
|
|
BookWithO2O.objects.create(
|
|
author=author, title="Django 2", pub_date=datetime.datetime.now()
|
|
)
|
|
self.assertForeignKeyExists(BookWithO2O, "author_id", "schema_author")
|
|
|
|
def test_alter_field_fk_to_o2o(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
expected_fks = (
|
|
1
|
|
if connection.features.supports_foreign_keys
|
|
and connection.features.can_introspect_foreign_keys
|
|
else 0
|
|
)
|
|
expected_indexes = 1 if connection.features.indexes_foreign_keys else 0
|
|
|
|
# Check the index is right to begin with.
|
|
counts = self.get_constraints_count(
|
|
Book._meta.db_table,
|
|
Book._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
self.assertEqual(
|
|
counts,
|
|
{"fks": expected_fks, "uniques": 0, "indexes": expected_indexes},
|
|
)
|
|
|
|
old_field = Book._meta.get_field("author")
|
|
new_field = OneToOneField(Author, CASCADE)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, old_field, new_field)
|
|
|
|
counts = self.get_constraints_count(
|
|
Book._meta.db_table,
|
|
Book._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
# The index on ForeignKey is replaced with a unique constraint for
|
|
# OneToOneField.
|
|
self.assertEqual(counts, {"fks": expected_fks, "uniques": 1, "indexes": 0})
|
|
|
|
def test_autofield_to_o2o(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Note)
|
|
|
|
# Rename the field.
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = AutoField(primary_key=True)
|
|
new_field.set_attributes_from_name("note_ptr")
|
|
new_field.model = Author
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
# Alter AutoField to OneToOneField.
|
|
new_field_o2o = OneToOneField(Note, CASCADE)
|
|
new_field_o2o.set_attributes_from_name("note_ptr")
|
|
new_field_o2o.model = Author
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, new_field_o2o, strict=True)
|
|
columns = self.column_classes(Author)
|
|
field_type, _ = columns["note_ptr_id"]
|
|
self.assertEqual(
|
|
field_type, connection.features.introspected_field_types["IntegerField"]
|
|
)
|
|
|
|
def test_alter_field_fk_keeps_index(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
expected_fks = (
|
|
1
|
|
if connection.features.supports_foreign_keys
|
|
and connection.features.can_introspect_foreign_keys
|
|
else 0
|
|
)
|
|
expected_indexes = 1 if connection.features.indexes_foreign_keys else 0
|
|
|
|
# Check the index is right to begin with.
|
|
counts = self.get_constraints_count(
|
|
Book._meta.db_table,
|
|
Book._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
self.assertEqual(
|
|
counts,
|
|
{"fks": expected_fks, "uniques": 0, "indexes": expected_indexes},
|
|
)
|
|
|
|
old_field = Book._meta.get_field("author")
|
|
# on_delete changed from CASCADE.
|
|
new_field = ForeignKey(Author, PROTECT)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, old_field, new_field, strict=True)
|
|
|
|
counts = self.get_constraints_count(
|
|
Book._meta.db_table,
|
|
Book._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
# The index remains.
|
|
self.assertEqual(
|
|
counts,
|
|
{"fks": expected_fks, "uniques": 0, "indexes": expected_indexes},
|
|
)
|
|
|
|
def test_alter_field_o2o_to_fk(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithO2O)
|
|
expected_fks = (
|
|
1
|
|
if connection.features.supports_foreign_keys
|
|
and connection.features.can_introspect_foreign_keys
|
|
else 0
|
|
)
|
|
|
|
# Check the unique constraint is right to begin with.
|
|
counts = self.get_constraints_count(
|
|
BookWithO2O._meta.db_table,
|
|
BookWithO2O._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
self.assertEqual(counts, {"fks": expected_fks, "uniques": 1, "indexes": 0})
|
|
|
|
old_field = BookWithO2O._meta.get_field("author")
|
|
new_field = ForeignKey(Author, CASCADE)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithO2O, old_field, new_field)
|
|
|
|
counts = self.get_constraints_count(
|
|
BookWithO2O._meta.db_table,
|
|
BookWithO2O._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
# The unique constraint on OneToOneField is replaced with an index for
|
|
# ForeignKey.
|
|
self.assertEqual(counts, {"fks": expected_fks, "uniques": 0, "indexes": 1})
|
|
|
|
def test_alter_field_o2o_keeps_unique(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithO2O)
|
|
expected_fks = (
|
|
1
|
|
if connection.features.supports_foreign_keys
|
|
and connection.features.can_introspect_foreign_keys
|
|
else 0
|
|
)
|
|
|
|
# Check the unique constraint is right to begin with.
|
|
counts = self.get_constraints_count(
|
|
BookWithO2O._meta.db_table,
|
|
BookWithO2O._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
self.assertEqual(counts, {"fks": expected_fks, "uniques": 1, "indexes": 0})
|
|
|
|
old_field = BookWithO2O._meta.get_field("author")
|
|
# on_delete changed from CASCADE.
|
|
new_field = OneToOneField(Author, PROTECT)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
|
|
|
|
counts = self.get_constraints_count(
|
|
BookWithO2O._meta.db_table,
|
|
BookWithO2O._meta.get_field("author").column,
|
|
(Author._meta.db_table, Author._meta.pk.column),
|
|
)
|
|
# The unique constraint remains.
|
|
self.assertEqual(counts, {"fks": expected_fks, "uniques": 1, "indexes": 0})
|
|
|
|
@skipUnlessDBFeature("ignores_table_name_case")
|
|
def test_alter_db_table_case(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Alter the case of the table
|
|
old_table_name = Author._meta.db_table
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_db_table(Author, old_table_name, old_table_name.upper())
|
|
|
|
def test_alter_implicit_id_to_explicit(self):
|
|
"""
|
|
Should be able to convert an implicit "id" field to an explicit "id"
|
|
primary key field.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = AutoField(primary_key=True)
|
|
new_field.set_attributes_from_name("id")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
# This will fail if DROP DEFAULT is inadvertently executed on this
|
|
# field which drops the id sequence, at least on PostgreSQL.
|
|
Author.objects.create(name="Foo")
|
|
Author.objects.create(name="Bar")
|
|
|
|
def test_alter_autofield_pk_to_bigautofield_pk(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = BigAutoField(primary_key=True)
|
|
new_field.set_attributes_from_name("id")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
|
|
Author.objects.create(name="Foo", pk=1)
|
|
with connection.cursor() as cursor:
|
|
sequence_reset_sqls = connection.ops.sequence_reset_sql(
|
|
no_style(), [Author]
|
|
)
|
|
if sequence_reset_sqls:
|
|
cursor.execute(sequence_reset_sqls[0])
|
|
self.assertIsNotNone(Author.objects.create(name="Bar"))
|
|
|
|
def test_alter_autofield_pk_to_smallautofield_pk(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
old_field = Author._meta.get_field("id")
|
|
new_field = SmallAutoField(primary_key=True)
|
|
new_field.set_attributes_from_name("id")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
|
|
Author.objects.create(name="Foo", pk=1)
|
|
with connection.cursor() as cursor:
|
|
sequence_reset_sqls = connection.ops.sequence_reset_sql(
|
|
no_style(), [Author]
|
|
)
|
|
if sequence_reset_sqls:
|
|
cursor.execute(sequence_reset_sqls[0])
|
|
self.assertIsNotNone(Author.objects.create(name="Bar"))
|
|
|
|
def test_alter_int_pk_to_autofield_pk(self):
|
|
"""
|
|
Should be able to rename an IntegerField(primary_key=True) to
|
|
AutoField(primary_key=True).
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(IntegerPK)
|
|
|
|
old_field = IntegerPK._meta.get_field("i")
|
|
new_field = AutoField(primary_key=True)
|
|
new_field.model = IntegerPK
|
|
new_field.set_attributes_from_name("i")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
|
|
|
|
# A model representing the updated model.
|
|
class IntegerPKToAutoField(Model):
|
|
i = AutoField(primary_key=True)
|
|
j = IntegerField(unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
db_table = IntegerPK._meta.db_table
|
|
|
|
# An id (i) is generated by the database.
|
|
obj = IntegerPKToAutoField.objects.create(j=1)
|
|
self.assertIsNotNone(obj.i)
|
|
|
|
def test_alter_int_pk_to_bigautofield_pk(self):
|
|
"""
|
|
Should be able to rename an IntegerField(primary_key=True) to
|
|
BigAutoField(primary_key=True).
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(IntegerPK)
|
|
|
|
old_field = IntegerPK._meta.get_field("i")
|
|
new_field = BigAutoField(primary_key=True)
|
|
new_field.model = IntegerPK
|
|
new_field.set_attributes_from_name("i")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
|
|
|
|
# A model representing the updated model.
|
|
class IntegerPKToBigAutoField(Model):
|
|
i = BigAutoField(primary_key=True)
|
|
j = IntegerField(unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
db_table = IntegerPK._meta.db_table
|
|
|
|
# An id (i) is generated by the database.
|
|
obj = IntegerPKToBigAutoField.objects.create(j=1)
|
|
self.assertIsNotNone(obj.i)
|
|
|
|
@isolate_apps("schema")
|
|
def test_alter_smallint_pk_to_smallautofield_pk(self):
|
|
"""
|
|
Should be able to rename an SmallIntegerField(primary_key=True) to
|
|
SmallAutoField(primary_key=True).
|
|
"""
|
|
|
|
class SmallIntegerPK(Model):
|
|
i = SmallIntegerField(primary_key=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(SmallIntegerPK)
|
|
self.isolated_local_models = [SmallIntegerPK]
|
|
old_field = SmallIntegerPK._meta.get_field("i")
|
|
new_field = SmallAutoField(primary_key=True)
|
|
new_field.model = SmallIntegerPK
|
|
new_field.set_attributes_from_name("i")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(SmallIntegerPK, old_field, new_field, strict=True)
|
|
|
|
@isolate_apps("schema")
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_serial_auto_field_to_bigautofield(self):
|
|
class SerialAutoField(Model):
|
|
id = SmallAutoField(primary_key=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
table = SerialAutoField._meta.db_table
|
|
column = SerialAutoField._meta.get_field("id").column
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
f'CREATE TABLE "{table}" '
|
|
f'("{column}" smallserial NOT NULL PRIMARY KEY)'
|
|
)
|
|
try:
|
|
old_field = SerialAutoField._meta.get_field("id")
|
|
new_field = BigAutoField(primary_key=True)
|
|
new_field.model = SerialAutoField
|
|
new_field.set_attributes_from_name("id")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(SerialAutoField, old_field, new_field, strict=True)
|
|
sequence_name = f"{table}_{column}_seq"
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
"SELECT data_type FROM pg_sequences WHERE sequencename = %s",
|
|
[sequence_name],
|
|
)
|
|
row = cursor.fetchone()
|
|
sequence_data_type = row[0] if row and row[0] else None
|
|
self.assertEqual(sequence_data_type, "bigint")
|
|
# Rename the column.
|
|
old_field = new_field
|
|
new_field = AutoField(primary_key=True)
|
|
new_field.model = SerialAutoField
|
|
new_field.set_attributes_from_name("renamed_id")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(SerialAutoField, old_field, new_field, strict=True)
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
"SELECT data_type FROM pg_sequences WHERE sequencename = %s",
|
|
[sequence_name],
|
|
)
|
|
row = cursor.fetchone()
|
|
sequence_data_type = row[0] if row and row[0] else None
|
|
self.assertEqual(sequence_data_type, "integer")
|
|
finally:
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(f'DROP TABLE "{table}"')
|
|
|
|
def test_alter_int_pk_to_int_unique(self):
|
|
"""
|
|
Should be able to rename an IntegerField(primary_key=True) to
|
|
IntegerField(unique=True).
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(IntegerPK)
|
|
# Delete the old PK
|
|
old_field = IntegerPK._meta.get_field("i")
|
|
new_field = IntegerField(unique=True)
|
|
new_field.model = IntegerPK
|
|
new_field.set_attributes_from_name("i")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
|
|
# The primary key constraint is gone. Result depends on database:
|
|
# 'id' for SQLite, None for others (must not be 'i').
|
|
self.assertIn(self.get_primary_key(IntegerPK._meta.db_table), ("id", None))
|
|
|
|
# Set up a model class as it currently stands. The original IntegerPK
|
|
# class is now out of date and some backends make use of the whole
|
|
# model class when modifying a field (such as sqlite3 when remaking a
|
|
# table) so an outdated model class leads to incorrect results.
|
|
class Transitional(Model):
|
|
i = IntegerField(unique=True)
|
|
j = IntegerField(unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
db_table = "INTEGERPK"
|
|
|
|
# model requires a new PK
|
|
old_field = Transitional._meta.get_field("j")
|
|
new_field = IntegerField(primary_key=True)
|
|
new_field.model = Transitional
|
|
new_field.set_attributes_from_name("j")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Transitional, old_field, new_field, strict=True)
|
|
|
|
# Create a model class representing the updated model.
|
|
class IntegerUnique(Model):
|
|
i = IntegerField(unique=True)
|
|
j = IntegerField(primary_key=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
db_table = "INTEGERPK"
|
|
|
|
# Ensure unique constraint works.
|
|
IntegerUnique.objects.create(i=1, j=1)
|
|
with self.assertRaises(IntegrityError):
|
|
IntegerUnique.objects.create(i=1, j=2)
|
|
|
|
def test_rename(self):
|
|
"""
|
|
Tests simple altering of fields
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure the field is right to begin with
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["name"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
self.assertNotIn("display_name", columns)
|
|
# Alter the name field's name
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=254)
|
|
new_field.set_attributes_from_name("display_name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["display_name"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
self.assertNotIn("name", columns)
|
|
|
|
@isolate_apps("schema")
|
|
def test_rename_referenced_field(self):
|
|
class Author(Model):
|
|
name = CharField(max_length=255, unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Book(Model):
|
|
author = ForeignKey(Author, CASCADE, to_field="name")
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
new_field = CharField(max_length=255, unique=True)
|
|
new_field.set_attributes_from_name("renamed")
|
|
with connection.schema_editor(
|
|
atomic=connection.features.supports_atomic_references_rename
|
|
) as editor:
|
|
editor.alter_field(Author, Author._meta.get_field("name"), new_field)
|
|
# Ensure the foreign key reference was updated.
|
|
self.assertForeignKeyExists(Book, "author_id", "schema_author", "renamed")
|
|
|
|
@skipIfDBFeature("interprets_empty_strings_as_nulls")
|
|
def test_rename_keep_null_status(self):
|
|
"""
|
|
Renaming a field shouldn't affect the not null status.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
with self.assertRaises(IntegrityError):
|
|
Note.objects.create(info=None)
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = TextField()
|
|
new_field.set_attributes_from_name("detail_info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Note)
|
|
self.assertEqual(columns["detail_info"][0], "TextField")
|
|
self.assertNotIn("info", columns)
|
|
with self.assertRaises(IntegrityError):
|
|
NoteRename.objects.create(detail_info=None)
|
|
|
|
def _test_m2m_create(self, M2MFieldClass):
|
|
"""
|
|
Tests M2M fields on models during creation
|
|
"""
|
|
|
|
class LocalBookWithM2M(Model):
|
|
author = ForeignKey(Author, CASCADE)
|
|
title = CharField(max_length=100, db_index=True)
|
|
pub_date = DateTimeField()
|
|
tags = M2MFieldClass("TagM2MTest", related_name="books")
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalBookWithM2M]
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(TagM2MTest)
|
|
editor.create_model(LocalBookWithM2M)
|
|
# Ensure there is now an m2m table there
|
|
columns = self.column_classes(
|
|
LocalBookWithM2M._meta.get_field("tags").remote_field.through
|
|
)
|
|
self.assertEqual(
|
|
columns["tagm2mtest_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
|
|
def test_m2m_create(self):
|
|
self._test_m2m_create(ManyToManyField)
|
|
|
|
def test_m2m_create_custom(self):
|
|
self._test_m2m_create(CustomManyToManyField)
|
|
|
|
def test_m2m_create_inherited(self):
|
|
self._test_m2m_create(InheritedManyToManyField)
|
|
|
|
def _test_m2m_create_through(self, M2MFieldClass):
|
|
"""
|
|
Tests M2M fields on models during creation with through models
|
|
"""
|
|
|
|
class LocalTagThrough(Model):
|
|
book = ForeignKey("schema.LocalBookWithM2MThrough", CASCADE)
|
|
tag = ForeignKey("schema.TagM2MTest", CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
class LocalBookWithM2MThrough(Model):
|
|
tags = M2MFieldClass(
|
|
"TagM2MTest", related_name="books", through=LocalTagThrough
|
|
)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalTagThrough, LocalBookWithM2MThrough]
|
|
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(LocalTagThrough)
|
|
editor.create_model(TagM2MTest)
|
|
editor.create_model(LocalBookWithM2MThrough)
|
|
# Ensure there is now an m2m table there
|
|
columns = self.column_classes(LocalTagThrough)
|
|
self.assertEqual(
|
|
columns["book_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
self.assertEqual(
|
|
columns["tag_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
|
|
def test_m2m_create_through(self):
|
|
self._test_m2m_create_through(ManyToManyField)
|
|
|
|
def test_m2m_create_through_custom(self):
|
|
self._test_m2m_create_through(CustomManyToManyField)
|
|
|
|
def test_m2m_create_through_inherited(self):
|
|
self._test_m2m_create_through(InheritedManyToManyField)
|
|
|
|
def test_m2m_through_remove(self):
|
|
class LocalAuthorNoteThrough(Model):
|
|
book = ForeignKey("schema.Author", CASCADE)
|
|
tag = ForeignKey("self", CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
class LocalNoteWithM2MThrough(Model):
|
|
authors = ManyToManyField("schema.Author", through=LocalAuthorNoteThrough)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalAuthorNoteThrough, LocalNoteWithM2MThrough]
|
|
# Create the tables.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(LocalAuthorNoteThrough)
|
|
editor.create_model(LocalNoteWithM2MThrough)
|
|
# Remove the through parameter.
|
|
old_field = LocalNoteWithM2MThrough._meta.get_field("authors")
|
|
new_field = ManyToManyField("Author")
|
|
new_field.set_attributes_from_name("authors")
|
|
msg = (
|
|
f"Cannot alter field {old_field} into {new_field} - they are not "
|
|
f"compatible types (you cannot alter to or from M2M fields, or add or "
|
|
f"remove through= on M2M fields)"
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
editor.alter_field(LocalNoteWithM2MThrough, old_field, new_field)
|
|
|
|
def _test_m2m(self, M2MFieldClass):
|
|
"""
|
|
Tests adding/removing M2M fields on models
|
|
"""
|
|
|
|
class LocalAuthorWithM2M(Model):
|
|
name = CharField(max_length=255)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalAuthorWithM2M]
|
|
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(LocalAuthorWithM2M)
|
|
editor.create_model(TagM2MTest)
|
|
# Create an M2M field
|
|
new_field = M2MFieldClass("schema.TagM2MTest", related_name="authors")
|
|
new_field.contribute_to_class(LocalAuthorWithM2M, "tags")
|
|
# Ensure there's no m2m table there
|
|
with self.assertRaises(DatabaseError):
|
|
self.column_classes(new_field.remote_field.through)
|
|
# Add the field
|
|
with CaptureQueriesContext(
|
|
connection
|
|
) as ctx, connection.schema_editor() as editor:
|
|
editor.add_field(LocalAuthorWithM2M, new_field)
|
|
# Table is not rebuilt.
|
|
self.assertEqual(
|
|
len(
|
|
[
|
|
query["sql"]
|
|
for query in ctx.captured_queries
|
|
if "CREATE TABLE" in query["sql"]
|
|
]
|
|
),
|
|
1,
|
|
)
|
|
self.assertIs(
|
|
any("DROP TABLE" in query["sql"] for query in ctx.captured_queries),
|
|
False,
|
|
)
|
|
# Ensure there is now an m2m table there
|
|
columns = self.column_classes(new_field.remote_field.through)
|
|
self.assertEqual(
|
|
columns["tagm2mtest_id"][0],
|
|
connection.features.introspected_field_types["IntegerField"],
|
|
)
|
|
|
|
# "Alter" the field. This should not rename the DB table to itself.
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(LocalAuthorWithM2M, new_field, new_field, strict=True)
|
|
|
|
# Remove the M2M table again
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_field(LocalAuthorWithM2M, new_field)
|
|
# Ensure there's no m2m table there
|
|
with self.assertRaises(DatabaseError):
|
|
self.column_classes(new_field.remote_field.through)
|
|
|
|
# Make sure the model state is coherent with the table one now that
|
|
# we've removed the tags field.
|
|
opts = LocalAuthorWithM2M._meta
|
|
opts.local_many_to_many.remove(new_field)
|
|
del new_apps.all_models["schema"][
|
|
new_field.remote_field.through._meta.model_name
|
|
]
|
|
opts._expire_cache()
|
|
|
|
def test_m2m(self):
|
|
self._test_m2m(ManyToManyField)
|
|
|
|
def test_m2m_custom(self):
|
|
self._test_m2m(CustomManyToManyField)
|
|
|
|
def test_m2m_inherited(self):
|
|
self._test_m2m(InheritedManyToManyField)
|
|
|
|
def _test_m2m_through_alter(self, M2MFieldClass):
|
|
"""
|
|
Tests altering M2Ms with explicit through models (should no-op)
|
|
"""
|
|
|
|
class LocalAuthorTag(Model):
|
|
author = ForeignKey("schema.LocalAuthorWithM2MThrough", CASCADE)
|
|
tag = ForeignKey("schema.TagM2MTest", CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
class LocalAuthorWithM2MThrough(Model):
|
|
name = CharField(max_length=255)
|
|
tags = M2MFieldClass(
|
|
"schema.TagM2MTest", related_name="authors", through=LocalAuthorTag
|
|
)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalAuthorTag, LocalAuthorWithM2MThrough]
|
|
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(LocalAuthorTag)
|
|
editor.create_model(LocalAuthorWithM2MThrough)
|
|
editor.create_model(TagM2MTest)
|
|
# Ensure the m2m table is there
|
|
self.assertEqual(len(self.column_classes(LocalAuthorTag)), 3)
|
|
# "Alter" the field's blankness. This should not actually do anything.
|
|
old_field = LocalAuthorWithM2MThrough._meta.get_field("tags")
|
|
new_field = M2MFieldClass(
|
|
"schema.TagM2MTest", related_name="authors", through=LocalAuthorTag
|
|
)
|
|
new_field.contribute_to_class(LocalAuthorWithM2MThrough, "tags")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(
|
|
LocalAuthorWithM2MThrough, old_field, new_field, strict=True
|
|
)
|
|
# Ensure the m2m table is still there
|
|
self.assertEqual(len(self.column_classes(LocalAuthorTag)), 3)
|
|
|
|
def test_m2m_through_alter(self):
|
|
self._test_m2m_through_alter(ManyToManyField)
|
|
|
|
def test_m2m_through_alter_custom(self):
|
|
self._test_m2m_through_alter(CustomManyToManyField)
|
|
|
|
def test_m2m_through_alter_inherited(self):
|
|
self._test_m2m_through_alter(InheritedManyToManyField)
|
|
|
|
def _test_m2m_repoint(self, M2MFieldClass):
|
|
"""
|
|
Tests repointing M2M fields
|
|
"""
|
|
|
|
class LocalBookWithM2M(Model):
|
|
author = ForeignKey(Author, CASCADE)
|
|
title = CharField(max_length=100, db_index=True)
|
|
pub_date = DateTimeField()
|
|
tags = M2MFieldClass("TagM2MTest", related_name="books")
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
|
|
self.local_models = [LocalBookWithM2M]
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(LocalBookWithM2M)
|
|
editor.create_model(TagM2MTest)
|
|
editor.create_model(UniqueTest)
|
|
# Ensure the M2M exists and points to TagM2MTest
|
|
if connection.features.supports_foreign_keys:
|
|
self.assertForeignKeyExists(
|
|
LocalBookWithM2M._meta.get_field("tags").remote_field.through,
|
|
"tagm2mtest_id",
|
|
"schema_tagm2mtest",
|
|
)
|
|
# Repoint the M2M
|
|
old_field = LocalBookWithM2M._meta.get_field("tags")
|
|
new_field = M2MFieldClass(UniqueTest)
|
|
new_field.contribute_to_class(LocalBookWithM2M, "uniques")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(LocalBookWithM2M, old_field, new_field, strict=True)
|
|
# Ensure old M2M is gone
|
|
with self.assertRaises(DatabaseError):
|
|
self.column_classes(
|
|
LocalBookWithM2M._meta.get_field("tags").remote_field.through
|
|
)
|
|
|
|
# This model looks like the new model and is used for teardown.
|
|
opts = LocalBookWithM2M._meta
|
|
opts.local_many_to_many.remove(old_field)
|
|
# Ensure the new M2M exists and points to UniqueTest
|
|
if connection.features.supports_foreign_keys:
|
|
self.assertForeignKeyExists(
|
|
new_field.remote_field.through, "uniquetest_id", "schema_uniquetest"
|
|
)
|
|
|
|
def test_m2m_repoint(self):
|
|
self._test_m2m_repoint(ManyToManyField)
|
|
|
|
def test_m2m_repoint_custom(self):
|
|
self._test_m2m_repoint(CustomManyToManyField)
|
|
|
|
def test_m2m_repoint_inherited(self):
|
|
self._test_m2m_repoint(InheritedManyToManyField)
|
|
|
|
@isolate_apps("schema")
|
|
def test_m2m_rename_field_in_target_model(self):
|
|
class LocalTagM2MTest(Model):
|
|
title = CharField(max_length=255)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class LocalM2M(Model):
|
|
tags = ManyToManyField(LocalTagM2MTest)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
# Create the tables.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(LocalM2M)
|
|
editor.create_model(LocalTagM2MTest)
|
|
self.isolated_local_models = [LocalM2M, LocalTagM2MTest]
|
|
# Ensure the m2m table is there.
|
|
self.assertEqual(len(self.column_classes(LocalM2M)), 1)
|
|
# Alter a field in LocalTagM2MTest.
|
|
old_field = LocalTagM2MTest._meta.get_field("title")
|
|
new_field = CharField(max_length=254)
|
|
new_field.contribute_to_class(LocalTagM2MTest, "title1")
|
|
# @isolate_apps() and inner models are needed to have the model
|
|
# relations populated, otherwise this doesn't act as a regression test.
|
|
self.assertEqual(len(new_field.model._meta.related_objects), 1)
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(LocalTagM2MTest, old_field, new_field, strict=True)
|
|
# Ensure the m2m table is still there.
|
|
self.assertEqual(len(self.column_classes(LocalM2M)), 1)
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_column_check_constraints", "can_introspect_check_constraints"
|
|
)
|
|
def test_check_constraints(self):
|
|
"""
|
|
Tests creating/deleting CHECK constraints
|
|
"""
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure the constraint exists
|
|
constraints = self.get_constraints(Author._meta.db_table)
|
|
if not any(
|
|
details["columns"] == ["height"] and details["check"]
|
|
for details in constraints.values()
|
|
):
|
|
self.fail("No check constraint for height found")
|
|
# Alter the column to remove it
|
|
old_field = Author._meta.get_field("height")
|
|
new_field = IntegerField(null=True, blank=True)
|
|
new_field.set_attributes_from_name("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
constraints = self.get_constraints(Author._meta.db_table)
|
|
for details in constraints.values():
|
|
if details["columns"] == ["height"] and details["check"]:
|
|
self.fail("Check constraint for height found")
|
|
# Alter the column to re-add it
|
|
new_field2 = Author._meta.get_field("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, new_field2, strict=True)
|
|
constraints = self.get_constraints(Author._meta.db_table)
|
|
if not any(
|
|
details["columns"] == ["height"] and details["check"]
|
|
for details in constraints.values()
|
|
):
|
|
self.fail("No check constraint for height found")
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_column_check_constraints", "can_introspect_check_constraints"
|
|
)
|
|
@isolate_apps("schema")
|
|
def test_check_constraint_timedelta_param(self):
|
|
class DurationModel(Model):
|
|
duration = DurationField()
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(DurationModel)
|
|
self.isolated_local_models = [DurationModel]
|
|
constraint_name = "duration_gte_5_minutes"
|
|
constraint = CheckConstraint(
|
|
check=Q(duration__gt=datetime.timedelta(minutes=5)),
|
|
name=constraint_name,
|
|
)
|
|
DurationModel._meta.constraints = [constraint]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(DurationModel, constraint)
|
|
constraints = self.get_constraints(DurationModel._meta.db_table)
|
|
self.assertIn(constraint_name, constraints)
|
|
with self.assertRaises(IntegrityError), atomic():
|
|
DurationModel.objects.create(duration=datetime.timedelta(minutes=4))
|
|
DurationModel.objects.create(duration=datetime.timedelta(minutes=10))
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_column_check_constraints", "can_introspect_check_constraints"
|
|
)
|
|
def test_remove_field_check_does_not_remove_meta_constraints(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add the custom check constraint
|
|
constraint = CheckConstraint(
|
|
check=Q(height__gte=0), name="author_height_gte_0_check"
|
|
)
|
|
custom_constraint_name = constraint.name
|
|
Author._meta.constraints = [constraint]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
# Ensure the constraints exist
|
|
constraints = self.get_constraints(Author._meta.db_table)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["height"]
|
|
and details["check"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Alter the column to remove field check
|
|
old_field = Author._meta.get_field("height")
|
|
new_field = IntegerField(null=True, blank=True)
|
|
new_field.set_attributes_from_name("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
constraints = self.get_constraints(Author._meta.db_table)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["height"]
|
|
and details["check"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 0)
|
|
# Alter the column to re-add field check
|
|
new_field2 = Author._meta.get_field("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, new_field2, strict=True)
|
|
constraints = self.get_constraints(Author._meta.db_table)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["height"]
|
|
and details["check"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Drop the check constraint
|
|
with connection.schema_editor() as editor:
|
|
Author._meta.constraints = []
|
|
editor.remove_constraint(Author, constraint)
|
|
|
|
def test_unique(self):
|
|
"""
|
|
Tests removing and adding unique constraints to a single column.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
# Ensure the field is unique to begin with
|
|
Tag.objects.create(title="foo", slug="foo")
|
|
with self.assertRaises(IntegrityError):
|
|
Tag.objects.create(title="bar", slug="foo")
|
|
Tag.objects.all().delete()
|
|
# Alter the slug field to be non-unique
|
|
old_field = Tag._meta.get_field("slug")
|
|
new_field = SlugField(unique=False)
|
|
new_field.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Tag, old_field, new_field, strict=True)
|
|
# Ensure the field is no longer unique
|
|
Tag.objects.create(title="foo", slug="foo")
|
|
Tag.objects.create(title="bar", slug="foo")
|
|
Tag.objects.all().delete()
|
|
# Alter the slug field to be unique
|
|
new_field2 = SlugField(unique=True)
|
|
new_field2.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Tag, new_field, new_field2, strict=True)
|
|
# Ensure the field is unique again
|
|
Tag.objects.create(title="foo", slug="foo")
|
|
with self.assertRaises(IntegrityError):
|
|
Tag.objects.create(title="bar", slug="foo")
|
|
Tag.objects.all().delete()
|
|
# Rename the field
|
|
new_field3 = SlugField(unique=True)
|
|
new_field3.set_attributes_from_name("slug2")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Tag, new_field2, new_field3, strict=True)
|
|
# Ensure the field is still unique
|
|
TagUniqueRename.objects.create(title="foo", slug2="foo")
|
|
with self.assertRaises(IntegrityError):
|
|
TagUniqueRename.objects.create(title="bar", slug2="foo")
|
|
Tag.objects.all().delete()
|
|
|
|
def test_unique_name_quoting(self):
|
|
old_table_name = TagUniqueRename._meta.db_table
|
|
try:
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(TagUniqueRename)
|
|
editor.alter_db_table(TagUniqueRename, old_table_name, "unique-table")
|
|
TagUniqueRename._meta.db_table = "unique-table"
|
|
# This fails if the unique index name isn't quoted.
|
|
editor.alter_unique_together(TagUniqueRename, [], (("title", "slug2"),))
|
|
finally:
|
|
with connection.schema_editor() as editor:
|
|
editor.delete_model(TagUniqueRename)
|
|
TagUniqueRename._meta.db_table = old_table_name
|
|
|
|
@isolate_apps("schema")
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_unique_no_unnecessary_fk_drops(self):
|
|
"""
|
|
If AlterField isn't selective about dropping foreign key constraints
|
|
when modifying a field with a unique constraint, the AlterField
|
|
incorrectly drops and recreates the Book.author foreign key even though
|
|
it doesn't restrict the field being changed (#29193).
|
|
"""
|
|
|
|
class Author(Model):
|
|
name = CharField(max_length=254, unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Book(Model):
|
|
author = ForeignKey(Author, CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
new_field = CharField(max_length=255, unique=True)
|
|
new_field.model = Author
|
|
new_field.set_attributes_from_name("name")
|
|
with self.assertLogs("django.db.backends.schema", "DEBUG") as cm:
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, Author._meta.get_field("name"), new_field)
|
|
# One SQL statement is executed to alter the field.
|
|
self.assertEqual(len(cm.records), 1)
|
|
|
|
@isolate_apps("schema")
|
|
def test_unique_and_reverse_m2m(self):
|
|
"""
|
|
AlterField can modify a unique field when there's a reverse M2M
|
|
relation on the model.
|
|
"""
|
|
|
|
class Tag(Model):
|
|
title = CharField(max_length=255)
|
|
slug = SlugField(unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Book(Model):
|
|
tags = ManyToManyField(Tag, related_name="books")
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
self.isolated_local_models = [Book._meta.get_field("tags").remote_field.through]
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
editor.create_model(Book)
|
|
new_field = SlugField(max_length=75, unique=True)
|
|
new_field.model = Tag
|
|
new_field.set_attributes_from_name("slug")
|
|
with self.assertLogs("django.db.backends.schema", "DEBUG") as cm:
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Tag, Tag._meta.get_field("slug"), new_field)
|
|
# One SQL statement is executed to alter the field.
|
|
self.assertEqual(len(cm.records), 1)
|
|
# Ensure that the field is still unique.
|
|
Tag.objects.create(title="foo", slug="foo")
|
|
with self.assertRaises(IntegrityError):
|
|
Tag.objects.create(title="bar", slug="foo")
|
|
|
|
@skipUnlessDBFeature("allows_multiple_constraints_on_same_fields")
|
|
def test_remove_field_unique_does_not_remove_meta_constraints(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithUniqueName)
|
|
self.local_models = [AuthorWithUniqueName]
|
|
# Add the custom unique constraint
|
|
constraint = UniqueConstraint(fields=["name"], name="author_name_uniq")
|
|
custom_constraint_name = constraint.name
|
|
AuthorWithUniqueName._meta.constraints = [constraint]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(AuthorWithUniqueName, constraint)
|
|
# Ensure the constraints exist
|
|
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name"]
|
|
and details["unique"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Alter the column to remove field uniqueness
|
|
old_field = AuthorWithUniqueName._meta.get_field("name")
|
|
new_field = CharField(max_length=255)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(AuthorWithUniqueName, old_field, new_field, strict=True)
|
|
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name"]
|
|
and details["unique"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 0)
|
|
# Alter the column to re-add field uniqueness
|
|
new_field2 = AuthorWithUniqueName._meta.get_field("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(AuthorWithUniqueName, new_field, new_field2, strict=True)
|
|
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name"]
|
|
and details["unique"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Drop the unique constraint
|
|
with connection.schema_editor() as editor:
|
|
AuthorWithUniqueName._meta.constraints = []
|
|
editor.remove_constraint(AuthorWithUniqueName, constraint)
|
|
|
|
def test_unique_together(self):
|
|
"""
|
|
Tests removing and adding unique_together constraints on a model.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(UniqueTest)
|
|
# Ensure the fields are unique to begin with
|
|
UniqueTest.objects.create(year=2012, slug="foo")
|
|
UniqueTest.objects.create(year=2011, slug="foo")
|
|
UniqueTest.objects.create(year=2011, slug="bar")
|
|
with self.assertRaises(IntegrityError):
|
|
UniqueTest.objects.create(year=2012, slug="foo")
|
|
UniqueTest.objects.all().delete()
|
|
# Alter the model to its non-unique-together companion
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(
|
|
UniqueTest, UniqueTest._meta.unique_together, []
|
|
)
|
|
# Ensure the fields are no longer unique
|
|
UniqueTest.objects.create(year=2012, slug="foo")
|
|
UniqueTest.objects.create(year=2012, slug="foo")
|
|
UniqueTest.objects.all().delete()
|
|
# Alter it back
|
|
new_field2 = SlugField(unique=True)
|
|
new_field2.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(
|
|
UniqueTest, [], UniqueTest._meta.unique_together
|
|
)
|
|
# Ensure the fields are unique again
|
|
UniqueTest.objects.create(year=2012, slug="foo")
|
|
with self.assertRaises(IntegrityError):
|
|
UniqueTest.objects.create(year=2012, slug="foo")
|
|
UniqueTest.objects.all().delete()
|
|
|
|
def test_unique_together_with_fk(self):
|
|
"""
|
|
Tests removing and adding unique_together constraints that include
|
|
a foreign key.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
# Ensure the fields are unique to begin with
|
|
self.assertEqual(Book._meta.unique_together, ())
|
|
# Add the unique_together constraint
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(Book, [], [["author", "title"]])
|
|
# Alter it back
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(Book, [["author", "title"]], [])
|
|
|
|
def test_unique_together_with_fk_with_existing_index(self):
|
|
"""
|
|
Tests removing and adding unique_together constraints that include
|
|
a foreign key, where the foreign key is added after the model is
|
|
created.
|
|
"""
|
|
# Create the tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithoutAuthor)
|
|
new_field = ForeignKey(Author, CASCADE)
|
|
new_field.set_attributes_from_name("author")
|
|
editor.add_field(BookWithoutAuthor, new_field)
|
|
# Ensure the fields aren't unique to begin with
|
|
self.assertEqual(Book._meta.unique_together, ())
|
|
# Add the unique_together constraint
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(Book, [], [["author", "title"]])
|
|
# Alter it back
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(Book, [["author", "title"]], [])
|
|
|
|
def _test_composed_index_with_fk(self, index):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
table = Book._meta.db_table
|
|
self.assertEqual(Book._meta.indexes, [])
|
|
Book._meta.indexes = [index]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Book, index)
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
Book._meta.indexes = []
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Book, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
def test_composed_index_with_fk(self):
|
|
index = Index(fields=["author", "title"], name="book_author_title_idx")
|
|
self._test_composed_index_with_fk(index)
|
|
|
|
def test_composed_desc_index_with_fk(self):
|
|
index = Index(fields=["-author", "title"], name="book_author_title_idx")
|
|
self._test_composed_index_with_fk(index)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_composed_func_index_with_fk(self):
|
|
index = Index(F("author"), F("title"), name="book_author_title_idx")
|
|
self._test_composed_index_with_fk(index)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_composed_desc_func_index_with_fk(self):
|
|
index = Index(F("author").desc(), F("title"), name="book_author_title_idx")
|
|
self._test_composed_index_with_fk(index)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_composed_func_transform_index_with_fk(self):
|
|
index = Index(F("title__lower"), name="book_title_lower_idx")
|
|
with register_lookup(CharField, Lower):
|
|
self._test_composed_index_with_fk(index)
|
|
|
|
def _test_composed_constraint_with_fk(self, constraint):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
table = Book._meta.db_table
|
|
self.assertEqual(Book._meta.constraints, [])
|
|
Book._meta.constraints = [constraint]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Book, constraint)
|
|
self.assertIn(constraint.name, self.get_constraints(table))
|
|
Book._meta.constraints = []
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Book, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
def test_composed_constraint_with_fk(self):
|
|
constraint = UniqueConstraint(
|
|
fields=["author", "title"],
|
|
name="book_author_title_uniq",
|
|
)
|
|
self._test_composed_constraint_with_fk(constraint)
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_column_check_constraints", "can_introspect_check_constraints"
|
|
)
|
|
def test_composed_check_constraint_with_fk(self):
|
|
constraint = CheckConstraint(check=Q(author__gt=0), name="book_author_check")
|
|
self._test_composed_constraint_with_fk(constraint)
|
|
|
|
@skipUnlessDBFeature("allows_multiple_constraints_on_same_fields")
|
|
def test_remove_unique_together_does_not_remove_meta_constraints(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithUniqueNameAndBirthday)
|
|
self.local_models = [AuthorWithUniqueNameAndBirthday]
|
|
# Add the custom unique constraint
|
|
constraint = UniqueConstraint(
|
|
fields=["name", "birthday"], name="author_name_birthday_uniq"
|
|
)
|
|
custom_constraint_name = constraint.name
|
|
AuthorWithUniqueNameAndBirthday._meta.constraints = [constraint]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(AuthorWithUniqueNameAndBirthday, constraint)
|
|
# Ensure the constraints exist
|
|
constraints = self.get_constraints(
|
|
AuthorWithUniqueNameAndBirthday._meta.db_table
|
|
)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name", "birthday"]
|
|
and details["unique"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Remove unique together
|
|
unique_together = AuthorWithUniqueNameAndBirthday._meta.unique_together
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(
|
|
AuthorWithUniqueNameAndBirthday, unique_together, []
|
|
)
|
|
constraints = self.get_constraints(
|
|
AuthorWithUniqueNameAndBirthday._meta.db_table
|
|
)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name", "birthday"]
|
|
and details["unique"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 0)
|
|
# Re-add unique together
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_unique_together(
|
|
AuthorWithUniqueNameAndBirthday, [], unique_together
|
|
)
|
|
constraints = self.get_constraints(
|
|
AuthorWithUniqueNameAndBirthday._meta.db_table
|
|
)
|
|
self.assertIn(custom_constraint_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name", "birthday"]
|
|
and details["unique"]
|
|
and name != custom_constraint_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Drop the unique constraint
|
|
with connection.schema_editor() as editor:
|
|
AuthorWithUniqueNameAndBirthday._meta.constraints = []
|
|
editor.remove_constraint(AuthorWithUniqueNameAndBirthday, constraint)
|
|
|
|
def test_unique_constraint(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(fields=["name"], name="name_uq")
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
sql = constraint.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
self.assertIs(sql.references_table(table), True)
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Author, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(Upper("name").desc(), name="func_upper_uq")
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
sql = constraint.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, constraint.name, ["DESC"])
|
|
self.assertIn(constraint.name, constraints)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
# SQL contains a database function.
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIn("UPPER(%s)" % editor.quote_name("name"), str(sql))
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Author, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_composite_func_unique_constraint(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithSlug)
|
|
constraint = UniqueConstraint(
|
|
Upper("title"),
|
|
Lower("slug"),
|
|
name="func_upper_lower_unq",
|
|
)
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(BookWithSlug, constraint)
|
|
sql = constraint.create_sql(BookWithSlug, editor)
|
|
table = BookWithSlug._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
self.assertIn(constraint.name, constraints)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
# SQL contains database functions.
|
|
self.assertIs(sql.references_column(table, "title"), True)
|
|
self.assertIs(sql.references_column(table, "slug"), True)
|
|
sql = str(sql)
|
|
self.assertIn("UPPER(%s)" % editor.quote_name("title"), sql)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("slug"), sql)
|
|
self.assertLess(sql.index("UPPER"), sql.index("LOWER"))
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(BookWithSlug, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_unique_constraint_field_and_expression(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(
|
|
F("height").desc(),
|
|
"uuid",
|
|
Lower("name").asc(),
|
|
name="func_f_lower_field_unq",
|
|
)
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
sql = constraint.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, constraint.name, ["DESC", "ASC", "ASC"])
|
|
constraints = self.get_constraints(table)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
self.assertEqual(len(constraints[constraint.name]["columns"]), 3)
|
|
self.assertEqual(constraints[constraint.name]["columns"][1], "uuid")
|
|
# SQL contains database functions and columns.
|
|
self.assertIs(sql.references_column(table, "height"), True)
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIs(sql.references_column(table, "uuid"), True)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("name"), str(sql))
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Author, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes", "supports_partial_indexes")
|
|
def test_func_unique_constraint_partial(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(
|
|
Upper("name"),
|
|
name="func_upper_cond_weight_uq",
|
|
condition=Q(weight__isnull=False),
|
|
)
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
sql = constraint.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
self.assertIn(constraint.name, constraints)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIn("UPPER(%s)" % editor.quote_name("name"), str(sql))
|
|
self.assertIn(
|
|
"WHERE %s IS NOT NULL" % editor.quote_name("weight"),
|
|
str(sql),
|
|
)
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Author, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes", "supports_covering_indexes")
|
|
def test_func_unique_constraint_covering(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(
|
|
Upper("name"),
|
|
name="func_upper_covering_uq",
|
|
include=["weight", "height"],
|
|
)
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
sql = constraint.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
self.assertIn(constraint.name, constraints)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
self.assertEqual(
|
|
constraints[constraint.name]["columns"],
|
|
[None, "weight", "height"],
|
|
)
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIs(sql.references_column(table, "weight"), True)
|
|
self.assertIs(sql.references_column(table, "height"), True)
|
|
self.assertIn("UPPER(%s)" % editor.quote_name("name"), str(sql))
|
|
self.assertIn(
|
|
"INCLUDE (%s, %s)"
|
|
% (
|
|
editor.quote_name("weight"),
|
|
editor.quote_name("height"),
|
|
),
|
|
str(sql),
|
|
)
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Author, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_lookups(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
with register_lookup(CharField, Lower), register_lookup(IntegerField, Abs):
|
|
constraint = UniqueConstraint(
|
|
F("name__lower"),
|
|
F("weight__abs"),
|
|
name="func_lower_abs_lookup_uq",
|
|
)
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
sql = constraint.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
self.assertIn(constraint.name, constraints)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
# SQL contains columns.
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIs(sql.references_column(table, "weight"), True)
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(Author, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_collate(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("This backend does not support case-insensitive collations.")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithSlug)
|
|
constraint = UniqueConstraint(
|
|
Collate(F("title"), collation=collation).desc(),
|
|
Collate("slug", collation=collation),
|
|
name="func_collate_uq",
|
|
)
|
|
# Add constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(BookWithSlug, constraint)
|
|
sql = constraint.create_sql(BookWithSlug, editor)
|
|
table = BookWithSlug._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
self.assertIn(constraint.name, constraints)
|
|
self.assertIs(constraints[constraint.name]["unique"], True)
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, constraint.name, ["DESC", "ASC"])
|
|
# SQL contains columns and a collation.
|
|
self.assertIs(sql.references_column(table, "title"), True)
|
|
self.assertIs(sql.references_column(table, "slug"), True)
|
|
self.assertIn("COLLATE %s" % editor.quote_name(collation), str(sql))
|
|
# Remove constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(BookWithSlug, constraint)
|
|
self.assertNotIn(constraint.name, self.get_constraints(table))
|
|
|
|
@skipIfDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_unsupported(self):
|
|
# UniqueConstraint is ignored on databases that don't support indexes on
|
|
# expressions.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(F("name"), name="func_name_uq")
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
self.assertIsNone(editor.add_constraint(Author, constraint))
|
|
self.assertIsNone(editor.remove_constraint(Author, constraint))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_nonexistent_field(self):
|
|
constraint = UniqueConstraint(Lower("nonexistent"), name="func_nonexistent_uq")
|
|
msg = (
|
|
"Cannot resolve keyword 'nonexistent' into field. Choices are: "
|
|
"height, id, name, uuid, weight"
|
|
)
|
|
with self.assertRaisesMessage(FieldError, msg):
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Author, constraint)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_nondeterministic(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
constraint = UniqueConstraint(Random(), name="func_random_uq")
|
|
with connection.schema_editor() as editor:
|
|
with self.assertRaises(DatabaseError):
|
|
editor.add_constraint(Author, constraint)
|
|
|
|
@ignore_warnings(category=RemovedInDjango51Warning)
|
|
def test_index_together(self):
|
|
"""
|
|
Tests removing and adding index_together constraints on a model.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
# Ensure there's no index on the year/slug columns first
|
|
self.assertIs(
|
|
any(
|
|
c["index"]
|
|
for c in self.get_constraints("schema_tag").values()
|
|
if c["columns"] == ["slug", "title"]
|
|
),
|
|
False,
|
|
)
|
|
# Alter the model to add an index
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_index_together(Tag, [], [("slug", "title")])
|
|
# Ensure there is now an index
|
|
self.assertIs(
|
|
any(
|
|
c["index"]
|
|
for c in self.get_constraints("schema_tag").values()
|
|
if c["columns"] == ["slug", "title"]
|
|
),
|
|
True,
|
|
)
|
|
# Alter it back
|
|
new_field2 = SlugField(unique=True)
|
|
new_field2.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_index_together(Tag, [("slug", "title")], [])
|
|
# Ensure there's no index
|
|
self.assertIs(
|
|
any(
|
|
c["index"]
|
|
for c in self.get_constraints("schema_tag").values()
|
|
if c["columns"] == ["slug", "title"]
|
|
),
|
|
False,
|
|
)
|
|
|
|
@ignore_warnings(category=RemovedInDjango51Warning)
|
|
def test_index_together_with_fk(self):
|
|
"""
|
|
Tests removing and adding index_together constraints that include
|
|
a foreign key.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
# Ensure the fields are unique to begin with
|
|
self.assertEqual(Book._meta.index_together, ())
|
|
# Add the unique_together constraint
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_index_together(Book, [], [["author", "title"]])
|
|
# Alter it back
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_index_together(Book, [["author", "title"]], [])
|
|
|
|
@ignore_warnings(category=RemovedInDjango51Warning)
|
|
@isolate_apps("schema")
|
|
def test_create_index_together(self):
|
|
"""
|
|
Tests creating models with index_together already defined
|
|
"""
|
|
|
|
class TagIndexed(Model):
|
|
title = CharField(max_length=255)
|
|
slug = SlugField(unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
index_together = [["slug", "title"]]
|
|
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(TagIndexed)
|
|
self.isolated_local_models = [TagIndexed]
|
|
# Ensure there is an index
|
|
self.assertIs(
|
|
any(
|
|
c["index"]
|
|
for c in self.get_constraints("schema_tagindexed").values()
|
|
if c["columns"] == ["slug", "title"]
|
|
),
|
|
True,
|
|
)
|
|
|
|
@skipUnlessDBFeature("allows_multiple_constraints_on_same_fields")
|
|
@ignore_warnings(category=RemovedInDjango51Warning)
|
|
@isolate_apps("schema")
|
|
def test_remove_index_together_does_not_remove_meta_indexes(self):
|
|
class AuthorWithIndexedNameAndBirthday(Model):
|
|
name = CharField(max_length=255)
|
|
birthday = DateField()
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
index_together = [["name", "birthday"]]
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithIndexedNameAndBirthday)
|
|
self.isolated_local_models = [AuthorWithIndexedNameAndBirthday]
|
|
# Add the custom index
|
|
index = Index(fields=["name", "birthday"], name="author_name_birthday_idx")
|
|
custom_index_name = index.name
|
|
AuthorWithIndexedNameAndBirthday._meta.indexes = [index]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(AuthorWithIndexedNameAndBirthday, index)
|
|
# Ensure the indexes exist
|
|
constraints = self.get_constraints(
|
|
AuthorWithIndexedNameAndBirthday._meta.db_table
|
|
)
|
|
self.assertIn(custom_index_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name", "birthday"]
|
|
and details["index"]
|
|
and name != custom_index_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Remove index together
|
|
index_together = AuthorWithIndexedNameAndBirthday._meta.index_together
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_index_together(
|
|
AuthorWithIndexedNameAndBirthday, index_together, []
|
|
)
|
|
constraints = self.get_constraints(
|
|
AuthorWithIndexedNameAndBirthday._meta.db_table
|
|
)
|
|
self.assertIn(custom_index_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name", "birthday"]
|
|
and details["index"]
|
|
and name != custom_index_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 0)
|
|
# Re-add index together
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_index_together(
|
|
AuthorWithIndexedNameAndBirthday, [], index_together
|
|
)
|
|
constraints = self.get_constraints(
|
|
AuthorWithIndexedNameAndBirthday._meta.db_table
|
|
)
|
|
self.assertIn(custom_index_name, constraints)
|
|
other_constraints = [
|
|
name
|
|
for name, details in constraints.items()
|
|
if details["columns"] == ["name", "birthday"]
|
|
and details["index"]
|
|
and name != custom_index_name
|
|
]
|
|
self.assertEqual(len(other_constraints), 1)
|
|
# Drop the index
|
|
with connection.schema_editor() as editor:
|
|
AuthorWithIndexedNameAndBirthday._meta.indexes = []
|
|
editor.remove_index(AuthorWithIndexedNameAndBirthday, index)
|
|
|
|
@isolate_apps("schema")
|
|
def test_db_table(self):
|
|
"""
|
|
Tests renaming of the table
|
|
"""
|
|
|
|
class Author(Model):
|
|
name = CharField(max_length=255)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Book(Model):
|
|
author = ForeignKey(Author, CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
# Create the table and one referring it.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
# Ensure the table is there to begin with
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["name"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
# Alter the table
|
|
with connection.schema_editor(
|
|
atomic=connection.features.supports_atomic_references_rename
|
|
) as editor:
|
|
editor.alter_db_table(Author, "schema_author", "schema_otherauthor")
|
|
Author._meta.db_table = "schema_otherauthor"
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["name"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
# Ensure the foreign key reference was updated
|
|
self.assertForeignKeyExists(Book, "author_id", "schema_otherauthor")
|
|
# Alter the table again
|
|
with connection.schema_editor(
|
|
atomic=connection.features.supports_atomic_references_rename
|
|
) as editor:
|
|
editor.alter_db_table(Author, "schema_otherauthor", "schema_author")
|
|
# Ensure the table is still there
|
|
Author._meta.db_table = "schema_author"
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["name"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
|
|
def test_add_remove_index(self):
|
|
"""
|
|
Tests index addition and removal
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure the table is there and has no index
|
|
self.assertNotIn("title", self.get_indexes(Author._meta.db_table))
|
|
# Add the index
|
|
index = Index(fields=["name"], name="author_title_idx")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
self.assertIn("name", self.get_indexes(Author._meta.db_table))
|
|
# Drop the index
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn("name", self.get_indexes(Author._meta.db_table))
|
|
|
|
def test_remove_db_index_doesnt_remove_custom_indexes(self):
|
|
"""
|
|
Changing db_index to False doesn't remove indexes from Meta.indexes.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithIndexedName)
|
|
self.local_models = [AuthorWithIndexedName]
|
|
# Ensure the table has its index
|
|
self.assertIn("name", self.get_indexes(AuthorWithIndexedName._meta.db_table))
|
|
|
|
# Add the custom index
|
|
index = Index(fields=["-name"], name="author_name_idx")
|
|
author_index_name = index.name
|
|
with connection.schema_editor() as editor:
|
|
db_index_name = editor._create_index_name(
|
|
table_name=AuthorWithIndexedName._meta.db_table,
|
|
column_names=("name",),
|
|
)
|
|
try:
|
|
AuthorWithIndexedName._meta.indexes = [index]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(AuthorWithIndexedName, index)
|
|
old_constraints = self.get_constraints(AuthorWithIndexedName._meta.db_table)
|
|
self.assertIn(author_index_name, old_constraints)
|
|
self.assertIn(db_index_name, old_constraints)
|
|
# Change name field to db_index=False
|
|
old_field = AuthorWithIndexedName._meta.get_field("name")
|
|
new_field = CharField(max_length=255)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(
|
|
AuthorWithIndexedName, old_field, new_field, strict=True
|
|
)
|
|
new_constraints = self.get_constraints(AuthorWithIndexedName._meta.db_table)
|
|
self.assertNotIn(db_index_name, new_constraints)
|
|
# The index from Meta.indexes is still in the database.
|
|
self.assertIn(author_index_name, new_constraints)
|
|
# Drop the index
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(AuthorWithIndexedName, index)
|
|
finally:
|
|
AuthorWithIndexedName._meta.indexes = []
|
|
|
|
def test_order_index(self):
|
|
"""
|
|
Indexes defined with ordering (ASC/DESC) defined on column
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# The table doesn't have an index
|
|
self.assertNotIn("title", self.get_indexes(Author._meta.db_table))
|
|
index_name = "author_name_idx"
|
|
# Add the index
|
|
index = Index(fields=["name", "-weight"], name=index_name)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(Author._meta.db_table, index_name, ["ASC", "DESC"])
|
|
# Drop the index
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
|
|
def test_indexes(self):
|
|
"""
|
|
Tests creation/altering of indexes
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
# Ensure the table is there and has the right index
|
|
self.assertIn(
|
|
"title",
|
|
self.get_indexes(Book._meta.db_table),
|
|
)
|
|
# Alter to remove the index
|
|
old_field = Book._meta.get_field("title")
|
|
new_field = CharField(max_length=100, db_index=False)
|
|
new_field.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, old_field, new_field, strict=True)
|
|
# Ensure the table is there and has no index
|
|
self.assertNotIn(
|
|
"title",
|
|
self.get_indexes(Book._meta.db_table),
|
|
)
|
|
# Alter to re-add the index
|
|
new_field2 = Book._meta.get_field("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, new_field, new_field2, strict=True)
|
|
# Ensure the table is there and has the index again
|
|
self.assertIn(
|
|
"title",
|
|
self.get_indexes(Book._meta.db_table),
|
|
)
|
|
# Add a unique column, verify that creates an implicit index
|
|
new_field3 = BookWithSlug._meta.get_field("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Book, new_field3)
|
|
self.assertIn(
|
|
"slug",
|
|
self.get_uniques(Book._meta.db_table),
|
|
)
|
|
# Remove the unique, check the index goes with it
|
|
new_field4 = CharField(max_length=20, unique=False)
|
|
new_field4.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithSlug, new_field3, new_field4, strict=True)
|
|
self.assertNotIn(
|
|
"slug",
|
|
self.get_uniques(Book._meta.db_table),
|
|
)
|
|
|
|
def test_text_field_with_db_index(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorTextFieldWithIndex)
|
|
# The text_field index is present if the database supports it.
|
|
assertion = (
|
|
self.assertIn
|
|
if connection.features.supports_index_on_text_field
|
|
else self.assertNotIn
|
|
)
|
|
assertion(
|
|
"text_field", self.get_indexes(AuthorTextFieldWithIndex._meta.db_table)
|
|
)
|
|
|
|
def _index_expressions_wrappers(self):
|
|
index_expression = IndexExpression()
|
|
index_expression.set_wrapper_classes(connection)
|
|
return ", ".join(
|
|
[
|
|
wrapper_cls.__qualname__
|
|
for wrapper_cls in index_expression.wrapper_classes
|
|
]
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_multiple_wrapper_references(self):
|
|
index = Index(OrderBy(F("name").desc(), descending=True), name="name")
|
|
msg = (
|
|
"Multiple references to %s can't be used in an indexed expression."
|
|
% self._index_expressions_wrappers()
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
editor.add_index(Author, index)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_invalid_topmost_expressions(self):
|
|
index = Index(Upper(F("name").desc()), name="name")
|
|
msg = (
|
|
"%s must be topmost expressions in an indexed expression."
|
|
% self._index_expressions_wrappers()
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
editor.add_index(Author, index)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(Lower("name").desc(), name="func_lower_idx")
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
sql = index.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, index.name, ["DESC"])
|
|
# SQL contains a database function.
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("name"), str(sql))
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_f(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
index = Index("slug", F("title").desc(), name="func_f_idx")
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Tag, index)
|
|
sql = index.create_sql(Tag, editor)
|
|
table = Tag._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(Tag._meta.db_table, index.name, ["ASC", "DESC"])
|
|
# SQL contains columns.
|
|
self.assertIs(sql.references_column(table, "slug"), True)
|
|
self.assertIs(sql.references_column(table, "title"), True)
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Tag, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_lookups(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
with register_lookup(CharField, Lower), register_lookup(IntegerField, Abs):
|
|
index = Index(
|
|
F("name__lower"),
|
|
F("weight__abs"),
|
|
name="func_lower_abs_lookup_idx",
|
|
)
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
sql = index.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
# SQL contains columns.
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIs(sql.references_column(table, "weight"), True)
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_composite_func_index(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(Lower("name"), Upper("name"), name="func_lower_upper_idx")
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
sql = index.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
# SQL contains database functions.
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
sql = str(sql)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("name"), sql)
|
|
self.assertIn("UPPER(%s)" % editor.quote_name("name"), sql)
|
|
self.assertLess(sql.index("LOWER"), sql.index("UPPER"))
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_composite_func_index_field_and_expression(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
index = Index(
|
|
F("author").desc(),
|
|
Lower("title").asc(),
|
|
"pub_date",
|
|
name="func_f_lower_field_idx",
|
|
)
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Book, index)
|
|
sql = index.create_sql(Book, editor)
|
|
table = Book._meta.db_table
|
|
constraints = self.get_constraints(table)
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, index.name, ["DESC", "ASC", "ASC"])
|
|
self.assertEqual(len(constraints[index.name]["columns"]), 3)
|
|
self.assertEqual(constraints[index.name]["columns"][2], "pub_date")
|
|
# SQL contains database functions and columns.
|
|
self.assertIs(sql.references_column(table, "author_id"), True)
|
|
self.assertIs(sql.references_column(table, "title"), True)
|
|
self.assertIs(sql.references_column(table, "pub_date"), True)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("title"), str(sql))
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Book, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
@isolate_apps("schema")
|
|
def test_func_index_f_decimalfield(self):
|
|
class Node(Model):
|
|
value = DecimalField(max_digits=5, decimal_places=2)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Node)
|
|
index = Index(F("value"), name="func_f_decimalfield_idx")
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Node, index)
|
|
sql = index.create_sql(Node, editor)
|
|
table = Node._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
self.assertIs(sql.references_column(table, "value"), True)
|
|
# SQL doesn't contain casting.
|
|
self.assertNotIn("CAST", str(sql))
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Node, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_cast(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(Cast("weight", FloatField()), name="func_cast_idx")
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
sql = index.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
self.assertIs(sql.references_column(table, "weight"), True)
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_collate(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("This backend does not support case-insensitive collations.")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(BookWithSlug)
|
|
index = Index(
|
|
Collate(F("title"), collation=collation).desc(),
|
|
Collate("slug", collation=collation),
|
|
name="func_collate_idx",
|
|
)
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(BookWithSlug, index)
|
|
sql = index.create_sql(BookWithSlug, editor)
|
|
table = Book._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, index.name, ["DESC", "ASC"])
|
|
# SQL contains columns and a collation.
|
|
self.assertIs(sql.references_column(table, "title"), True)
|
|
self.assertIs(sql.references_column(table, "slug"), True)
|
|
self.assertIn("COLLATE %s" % editor.quote_name(collation), str(sql))
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Book, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
@skipIfDBFeature("collate_as_index_expression")
|
|
def test_func_index_collate_f_ordered(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("This backend does not support case-insensitive collations.")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(
|
|
Collate(F("name").desc(), collation=collation),
|
|
name="func_collate_f_desc_idx",
|
|
)
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
sql = index.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertIndexOrder(table, index.name, ["DESC"])
|
|
# SQL contains columns and a collation.
|
|
self.assertIs(sql.references_column(table, "name"), True)
|
|
self.assertIn("COLLATE %s" % editor.quote_name(collation), str(sql))
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_calc(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(F("height") / (F("weight") + Value(5)), name="func_calc_idx")
|
|
# Add index.
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
sql = index.create_sql(Author, editor)
|
|
table = Author._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
# SQL contains columns and expressions.
|
|
self.assertIs(sql.references_column(table, "height"), True)
|
|
self.assertIs(sql.references_column(table, "weight"), True)
|
|
sql = str(sql)
|
|
self.assertIs(
|
|
sql.index(editor.quote_name("height"))
|
|
< sql.index("/")
|
|
< sql.index(editor.quote_name("weight"))
|
|
< sql.index("+")
|
|
< sql.index("5"),
|
|
True,
|
|
)
|
|
# Remove index.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Author, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes", "supports_json_field")
|
|
@isolate_apps("schema")
|
|
def test_func_index_json_key_transform(self):
|
|
class JSONModel(Model):
|
|
field = JSONField()
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(JSONModel)
|
|
self.isolated_local_models = [JSONModel]
|
|
index = Index("field__some_key", name="func_json_key_idx")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(JSONModel, index)
|
|
sql = index.create_sql(JSONModel, editor)
|
|
table = JSONModel._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
self.assertIs(sql.references_column(table, "field"), True)
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(JSONModel, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes", "supports_json_field")
|
|
@isolate_apps("schema")
|
|
def test_func_index_json_key_transform_cast(self):
|
|
class JSONModel(Model):
|
|
field = JSONField()
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(JSONModel)
|
|
self.isolated_local_models = [JSONModel]
|
|
index = Index(
|
|
Cast(KeyTextTransform("some_key", "field"), IntegerField()),
|
|
name="func_json_key_cast_idx",
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(JSONModel, index)
|
|
sql = index.create_sql(JSONModel, editor)
|
|
table = JSONModel._meta.db_table
|
|
self.assertIn(index.name, self.get_constraints(table))
|
|
self.assertIs(sql.references_column(table, "field"), True)
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(JSONModel, index)
|
|
self.assertNotIn(index.name, self.get_constraints(table))
|
|
|
|
@skipIfDBFeature("supports_expression_indexes")
|
|
def test_func_index_unsupported(self):
|
|
# Index is ignored on databases that don't support indexes on
|
|
# expressions.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(F("name"), name="random_idx")
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
self.assertIsNone(editor.add_index(Author, index))
|
|
self.assertIsNone(editor.remove_index(Author, index))
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_nonexistent_field(self):
|
|
index = Index(Lower("nonexistent"), name="func_nonexistent_idx")
|
|
msg = (
|
|
"Cannot resolve keyword 'nonexistent' into field. Choices are: "
|
|
"height, id, name, uuid, weight"
|
|
)
|
|
with self.assertRaisesMessage(FieldError, msg):
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Author, index)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_index_nondeterministic(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
index = Index(Random(), name="func_random_idx")
|
|
with connection.schema_editor() as editor:
|
|
with self.assertRaises(DatabaseError):
|
|
editor.add_index(Author, index)
|
|
|
|
def test_primary_key(self):
|
|
"""
|
|
Tests altering of the primary key
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
# Ensure the table is there and has the right PK
|
|
self.assertEqual(self.get_primary_key(Tag._meta.db_table), "id")
|
|
# Alter to change the PK
|
|
id_field = Tag._meta.get_field("id")
|
|
old_field = Tag._meta.get_field("slug")
|
|
new_field = SlugField(primary_key=True)
|
|
new_field.set_attributes_from_name("slug")
|
|
new_field.model = Tag
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_field(Tag, id_field)
|
|
editor.alter_field(Tag, old_field, new_field)
|
|
# Ensure the PK changed
|
|
self.assertNotIn(
|
|
"id",
|
|
self.get_indexes(Tag._meta.db_table),
|
|
)
|
|
self.assertEqual(self.get_primary_key(Tag._meta.db_table), "slug")
|
|
|
|
def test_alter_primary_key_the_same_name(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Thing)
|
|
|
|
old_field = Thing._meta.get_field("when")
|
|
new_field = CharField(max_length=2, primary_key=True)
|
|
new_field.set_attributes_from_name("when")
|
|
new_field.model = Thing
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Thing, old_field, new_field, strict=True)
|
|
self.assertEqual(self.get_primary_key(Thing._meta.db_table), "when")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Thing, new_field, old_field, strict=True)
|
|
self.assertEqual(self.get_primary_key(Thing._meta.db_table), "when")
|
|
|
|
def test_context_manager_exit(self):
|
|
"""
|
|
Ensures transaction is correctly closed when an error occurs
|
|
inside a SchemaEditor context.
|
|
"""
|
|
|
|
class SomeError(Exception):
|
|
pass
|
|
|
|
try:
|
|
with connection.schema_editor():
|
|
raise SomeError
|
|
except SomeError:
|
|
self.assertFalse(connection.in_atomic_block)
|
|
|
|
@skipIfDBFeature("can_rollback_ddl")
|
|
def test_unsupported_transactional_ddl_disallowed(self):
|
|
message = (
|
|
"Executing DDL statements while in a transaction on databases "
|
|
"that can't perform a rollback is prohibited."
|
|
)
|
|
with atomic(), connection.schema_editor() as editor:
|
|
with self.assertRaisesMessage(TransactionManagementError, message):
|
|
editor.execute(
|
|
editor.sql_create_table % {"table": "foo", "definition": ""}
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys", "indexes_foreign_keys")
|
|
def test_foreign_key_index_long_names_regression(self):
|
|
"""
|
|
Regression test for #21497.
|
|
Only affects databases that supports foreign keys.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithEvenLongerName)
|
|
editor.create_model(BookWithLongName)
|
|
# Find the properly shortened column name
|
|
column_name = connection.ops.quote_name(
|
|
"author_foreign_key_with_really_long_field_name_id"
|
|
)
|
|
column_name = column_name[1:-1].lower() # unquote, and, for Oracle, un-upcase
|
|
# Ensure the table is there and has an index on the column
|
|
self.assertIn(
|
|
column_name,
|
|
self.get_indexes(BookWithLongName._meta.db_table),
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_add_foreign_key_long_names(self):
|
|
"""
|
|
Regression test for #23009.
|
|
Only affects databases that supports foreign keys.
|
|
"""
|
|
# Create the initial tables
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithEvenLongerName)
|
|
editor.create_model(BookWithLongName)
|
|
# Add a second FK, this would fail due to long ref name before the fix
|
|
new_field = ForeignKey(
|
|
AuthorWithEvenLongerName, CASCADE, related_name="something"
|
|
)
|
|
new_field.set_attributes_from_name(
|
|
"author_other_really_long_named_i_mean_so_long_fk"
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(BookWithLongName, new_field)
|
|
|
|
@isolate_apps("schema")
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_add_foreign_key_quoted_db_table(self):
|
|
class Author(Model):
|
|
class Meta:
|
|
db_table = '"table_author_double_quoted"'
|
|
app_label = "schema"
|
|
|
|
class Book(Model):
|
|
author = ForeignKey(Author, CASCADE)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
self.isolated_local_models = [Author]
|
|
if connection.vendor == "mysql":
|
|
self.assertForeignKeyExists(
|
|
Book, "author_id", '"table_author_double_quoted"'
|
|
)
|
|
else:
|
|
self.assertForeignKeyExists(Book, "author_id", "table_author_double_quoted")
|
|
|
|
def test_add_foreign_object(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(BookForeignObj)
|
|
self.local_models = [BookForeignObj]
|
|
|
|
new_field = ForeignObject(
|
|
Author, on_delete=CASCADE, from_fields=["author_id"], to_fields=["id"]
|
|
)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(BookForeignObj, new_field)
|
|
|
|
def test_creation_deletion_reserved_names(self):
|
|
"""
|
|
Tries creating a model's table, and then deleting it when it has a
|
|
SQL reserved name.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
try:
|
|
editor.create_model(Thing)
|
|
except OperationalError as e:
|
|
self.fail(
|
|
"Errors when applying initial migration for a model "
|
|
"with a table named after an SQL reserved word: %s" % e
|
|
)
|
|
# The table is there
|
|
list(Thing.objects.all())
|
|
# Clean up that table
|
|
with connection.schema_editor() as editor:
|
|
editor.delete_model(Thing)
|
|
# The table is gone
|
|
with self.assertRaises(DatabaseError):
|
|
list(Thing.objects.all())
|
|
|
|
def test_remove_constraints_capital_letters(self):
|
|
"""
|
|
#23065 - Constraint names must be quoted if they contain capital letters.
|
|
"""
|
|
|
|
def get_field(*args, field_class=IntegerField, **kwargs):
|
|
kwargs["db_column"] = "CamelCase"
|
|
field = field_class(*args, **kwargs)
|
|
field.set_attributes_from_name("CamelCase")
|
|
return field
|
|
|
|
model = Author
|
|
field = get_field()
|
|
table = model._meta.db_table
|
|
column = field.column
|
|
identifier_converter = connection.introspection.identifier_converter
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(model)
|
|
editor.add_field(model, field)
|
|
|
|
constraint_name = "CamelCaseIndex"
|
|
expected_constraint_name = identifier_converter(constraint_name)
|
|
editor.execute(
|
|
editor.sql_create_index
|
|
% {
|
|
"table": editor.quote_name(table),
|
|
"name": editor.quote_name(constraint_name),
|
|
"using": "",
|
|
"columns": editor.quote_name(column),
|
|
"extra": "",
|
|
"condition": "",
|
|
"include": "",
|
|
}
|
|
)
|
|
self.assertIn(
|
|
expected_constraint_name, self.get_constraints(model._meta.db_table)
|
|
)
|
|
editor.alter_field(model, get_field(db_index=True), field, strict=True)
|
|
self.assertNotIn(
|
|
expected_constraint_name, self.get_constraints(model._meta.db_table)
|
|
)
|
|
|
|
constraint_name = "CamelCaseUniqConstraint"
|
|
expected_constraint_name = identifier_converter(constraint_name)
|
|
editor.execute(editor._create_unique_sql(model, [field], constraint_name))
|
|
self.assertIn(
|
|
expected_constraint_name, self.get_constraints(model._meta.db_table)
|
|
)
|
|
editor.alter_field(model, get_field(unique=True), field, strict=True)
|
|
self.assertNotIn(
|
|
expected_constraint_name, self.get_constraints(model._meta.db_table)
|
|
)
|
|
|
|
if editor.sql_create_fk and connection.features.can_introspect_foreign_keys:
|
|
constraint_name = "CamelCaseFKConstraint"
|
|
expected_constraint_name = identifier_converter(constraint_name)
|
|
editor.execute(
|
|
editor.sql_create_fk
|
|
% {
|
|
"table": editor.quote_name(table),
|
|
"name": editor.quote_name(constraint_name),
|
|
"column": editor.quote_name(column),
|
|
"to_table": editor.quote_name(table),
|
|
"to_column": editor.quote_name(model._meta.auto_field.column),
|
|
"deferrable": connection.ops.deferrable_sql(),
|
|
}
|
|
)
|
|
self.assertIn(
|
|
expected_constraint_name, self.get_constraints(model._meta.db_table)
|
|
)
|
|
editor.alter_field(
|
|
model,
|
|
get_field(Author, CASCADE, field_class=ForeignKey),
|
|
field,
|
|
strict=True,
|
|
)
|
|
self.assertNotIn(
|
|
expected_constraint_name, self.get_constraints(model._meta.db_table)
|
|
)
|
|
|
|
def test_add_field_use_effective_default(self):
|
|
"""
|
|
#23987 - effective_default() should be used as the field default when
|
|
adding a new field.
|
|
"""
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure there's no surname field
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("surname", columns)
|
|
# Create a row
|
|
Author.objects.create(name="Anonymous1")
|
|
# Add new CharField to ensure default will be used from effective_default
|
|
new_field = CharField(max_length=15, blank=True)
|
|
new_field.set_attributes_from_name("surname")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
# Ensure field was added with the right default
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("SELECT surname FROM schema_author;")
|
|
item = cursor.fetchall()[0]
|
|
self.assertEqual(
|
|
item[0],
|
|
None if connection.features.interprets_empty_strings_as_nulls else "",
|
|
)
|
|
|
|
def test_add_field_default_dropped(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Ensure there's no surname field
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("surname", columns)
|
|
# Create a row
|
|
Author.objects.create(name="Anonymous1")
|
|
# Add new CharField with a default
|
|
new_field = CharField(max_length=15, blank=True, default="surname default")
|
|
new_field.set_attributes_from_name("surname")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
# Ensure field was added with the right default
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("SELECT surname FROM schema_author;")
|
|
item = cursor.fetchall()[0]
|
|
self.assertEqual(item[0], "surname default")
|
|
# And that the default is no longer set in the database.
|
|
field = next(
|
|
f
|
|
for f in connection.introspection.get_table_description(
|
|
cursor, "schema_author"
|
|
)
|
|
if f.name == "surname"
|
|
)
|
|
if connection.features.can_introspect_default:
|
|
self.assertIsNone(field.default)
|
|
|
|
def test_add_field_default_nullable(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add new nullable CharField with a default.
|
|
new_field = CharField(max_length=15, blank=True, null=True, default="surname")
|
|
new_field.set_attributes_from_name("surname")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
Author.objects.create(name="Anonymous1")
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("SELECT surname FROM schema_author;")
|
|
item = cursor.fetchall()[0]
|
|
self.assertIsNone(item[0])
|
|
field = next(
|
|
f
|
|
for f in connection.introspection.get_table_description(
|
|
cursor,
|
|
"schema_author",
|
|
)
|
|
if f.name == "surname"
|
|
)
|
|
# Field is still nullable.
|
|
self.assertTrue(field.null_ok)
|
|
# The database default is no longer set.
|
|
if connection.features.can_introspect_default:
|
|
self.assertIn(field.default, ["NULL", None])
|
|
|
|
def test_add_textfield_default_nullable(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add new nullable TextField with a default.
|
|
new_field = TextField(blank=True, null=True, default="text")
|
|
new_field.set_attributes_from_name("description")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
Author.objects.create(name="Anonymous1")
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("SELECT description FROM schema_author;")
|
|
item = cursor.fetchall()[0]
|
|
self.assertIsNone(item[0])
|
|
field = next(
|
|
f
|
|
for f in connection.introspection.get_table_description(
|
|
cursor,
|
|
"schema_author",
|
|
)
|
|
if f.name == "description"
|
|
)
|
|
# Field is still nullable.
|
|
self.assertTrue(field.null_ok)
|
|
# The database default is no longer set.
|
|
if connection.features.can_introspect_default:
|
|
self.assertIn(field.default, ["NULL", None])
|
|
|
|
def test_alter_field_default_dropped(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Create a row
|
|
Author.objects.create(name="Anonymous1")
|
|
self.assertIsNone(Author.objects.get().height)
|
|
old_field = Author._meta.get_field("height")
|
|
# The default from the new field is used in updating existing rows.
|
|
new_field = IntegerField(blank=True, default=42)
|
|
new_field.set_attributes_from_name("height")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(Author.objects.get().height, 42)
|
|
# The database default should be removed.
|
|
with connection.cursor() as cursor:
|
|
field = next(
|
|
f
|
|
for f in connection.introspection.get_table_description(
|
|
cursor, "schema_author"
|
|
)
|
|
if f.name == "height"
|
|
)
|
|
if connection.features.can_introspect_default:
|
|
self.assertIsNone(field.default)
|
|
|
|
def test_alter_field_default_doesnt_perform_queries(self):
|
|
"""
|
|
No queries are performed if a field default changes and the field's
|
|
not changing from null to non-null.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(AuthorWithDefaultHeight)
|
|
old_field = AuthorWithDefaultHeight._meta.get_field("height")
|
|
new_default = old_field.default * 2
|
|
new_field = PositiveIntegerField(null=True, blank=True, default=new_default)
|
|
new_field.set_attributes_from_name("height")
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
editor.alter_field(
|
|
AuthorWithDefaultHeight, old_field, new_field, strict=True
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_foreign_keys")
|
|
def test_alter_field_fk_attributes_noop(self):
|
|
"""
|
|
No queries are performed when changing field attributes that don't
|
|
affect the schema.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
old_field = Book._meta.get_field("author")
|
|
new_field = ForeignKey(
|
|
Author,
|
|
blank=True,
|
|
editable=False,
|
|
error_messages={"invalid": "error message"},
|
|
help_text="help text",
|
|
limit_choices_to={"limit": "choice"},
|
|
on_delete=PROTECT,
|
|
related_name="related_name",
|
|
related_query_name="related_query_name",
|
|
validators=[lambda x: x],
|
|
verbose_name="verbose name",
|
|
)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
editor.alter_field(Book, old_field, new_field, strict=True)
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
editor.alter_field(Book, new_field, old_field, strict=True)
|
|
|
|
def test_alter_field_choices_noop(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(
|
|
choices=(("Jane", "Jane"), ("Joe", "Joe")),
|
|
max_length=255,
|
|
)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
with connection.schema_editor() as editor, self.assertNumQueries(0):
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
|
|
def test_add_textfield_unhashable_default(self):
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Create a row
|
|
Author.objects.create(name="Anonymous1")
|
|
# Create a field that has an unhashable default
|
|
new_field = TextField(default={})
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_add_indexed_charfield(self):
|
|
field = CharField(max_length=255, db_index=True)
|
|
field.set_attributes_from_name("nom_de_plume")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.add_field(Author, field)
|
|
# Should create two indexes; one for like operator.
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Author, "nom_de_plume"),
|
|
[
|
|
"schema_author_nom_de_plume_7570a851",
|
|
"schema_author_nom_de_plume_7570a851_like",
|
|
],
|
|
)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_add_unique_charfield(self):
|
|
field = CharField(max_length=255, unique=True)
|
|
field.set_attributes_from_name("nom_de_plume")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.add_field(Author, field)
|
|
# Should create two indexes; one for like operator.
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Author, "nom_de_plume"),
|
|
[
|
|
"schema_author_nom_de_plume_7570a851_like",
|
|
"schema_author_nom_de_plume_key",
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_comments")
|
|
def test_add_db_comment_charfield(self):
|
|
comment = "Custom comment"
|
|
field = CharField(max_length=255, db_comment=comment)
|
|
field.set_attributes_from_name("name_with_comment")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.add_field(Author, field)
|
|
self.assertEqual(
|
|
self.get_column_comment(Author._meta.db_table, "name_with_comment"),
|
|
comment,
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_comments")
|
|
def test_add_db_comment_and_default_charfield(self):
|
|
comment = "Custom comment with default"
|
|
field = CharField(max_length=255, default="Joe Doe", db_comment=comment)
|
|
field.set_attributes_from_name("name_with_comment_default")
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
Author.objects.create(name="Before adding a new field")
|
|
editor.add_field(Author, field)
|
|
|
|
self.assertEqual(
|
|
self.get_column_comment(Author._meta.db_table, "name_with_comment_default"),
|
|
comment,
|
|
)
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
f"SELECT name_with_comment_default FROM {Author._meta.db_table};"
|
|
)
|
|
for row in cursor.fetchall():
|
|
self.assertEqual(row[0], "Joe Doe")
|
|
|
|
@skipUnlessDBFeature("supports_comments")
|
|
def test_alter_db_comment(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Add comment.
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=255, db_comment="Custom comment")
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_comment(Author._meta.db_table, "name"),
|
|
"Custom comment",
|
|
)
|
|
# Alter comment.
|
|
old_field = new_field
|
|
new_field = CharField(max_length=255, db_comment="New custom comment")
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_comment(Author._meta.db_table, "name"),
|
|
"New custom comment",
|
|
)
|
|
# Remove comment.
|
|
old_field = new_field
|
|
new_field = CharField(max_length=255)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertIn(
|
|
self.get_column_comment(Author._meta.db_table, "name"),
|
|
[None, ""],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_comments", "supports_foreign_keys")
|
|
def test_alter_db_comment_foreign_key(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
|
|
comment = "FK custom comment"
|
|
old_field = Book._meta.get_field("author")
|
|
new_field = ForeignKey(Author, CASCADE, db_comment=comment)
|
|
new_field.set_attributes_from_name("author")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Book, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_comment(Book._meta.db_table, "author_id"),
|
|
comment,
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_comments")
|
|
def test_alter_field_type_preserve_comment(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
|
|
comment = "This is the name."
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=255, db_comment=comment)
|
|
new_field.set_attributes_from_name("name")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_comment(Author._meta.db_table, "name"),
|
|
comment,
|
|
)
|
|
# Changing a field type should preserve the comment.
|
|
old_field = new_field
|
|
new_field = CharField(max_length=511, db_comment=comment)
|
|
new_field.set_attributes_from_name("name")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
# Comment is preserved.
|
|
self.assertEqual(
|
|
self.get_column_comment(Author._meta.db_table, "name"),
|
|
comment,
|
|
)
|
|
|
|
@isolate_apps("schema")
|
|
@skipUnlessDBFeature("supports_comments")
|
|
def test_db_comment_table(self):
|
|
class ModelWithDbTableComment(Model):
|
|
class Meta:
|
|
app_label = "schema"
|
|
db_table_comment = "Custom table comment"
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(ModelWithDbTableComment)
|
|
self.isolated_local_models = [ModelWithDbTableComment]
|
|
self.assertEqual(
|
|
self.get_table_comment(ModelWithDbTableComment._meta.db_table),
|
|
"Custom table comment",
|
|
)
|
|
# Alter table comment.
|
|
old_db_table_comment = ModelWithDbTableComment._meta.db_table_comment
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_db_table_comment(
|
|
ModelWithDbTableComment, old_db_table_comment, "New table comment"
|
|
)
|
|
self.assertEqual(
|
|
self.get_table_comment(ModelWithDbTableComment._meta.db_table),
|
|
"New table comment",
|
|
)
|
|
# Remove table comment.
|
|
old_db_table_comment = ModelWithDbTableComment._meta.db_table_comment
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_db_table_comment(
|
|
ModelWithDbTableComment, old_db_table_comment, None
|
|
)
|
|
self.assertIn(
|
|
self.get_table_comment(ModelWithDbTableComment._meta.db_table),
|
|
[None, ""],
|
|
)
|
|
|
|
@isolate_apps("schema")
|
|
@skipUnlessDBFeature("supports_comments", "supports_foreign_keys")
|
|
def test_db_comments_from_abstract_model(self):
|
|
class AbstractModelWithDbComments(Model):
|
|
name = CharField(
|
|
max_length=255, db_comment="Custom comment", null=True, blank=True
|
|
)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
abstract = True
|
|
db_table_comment = "Custom table comment"
|
|
|
|
class ModelWithDbComments(AbstractModelWithDbComments):
|
|
pass
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(ModelWithDbComments)
|
|
self.isolated_local_models = [ModelWithDbComments]
|
|
|
|
self.assertEqual(
|
|
self.get_column_comment(ModelWithDbComments._meta.db_table, "name"),
|
|
"Custom comment",
|
|
)
|
|
self.assertEqual(
|
|
self.get_table_comment(ModelWithDbComments._meta.db_table),
|
|
"Custom table comment",
|
|
)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_add_index_to_charfield(self):
|
|
# Create the table and verify no initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
self.assertEqual(self.get_constraints_for_column(Author, "name"), [])
|
|
# Alter to add db_index=True and create 2 indexes.
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=255, db_index=True)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Author, "name"),
|
|
["schema_author_name_1fbc5617", "schema_author_name_1fbc5617_like"],
|
|
)
|
|
# Remove db_index=True to drop both indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
self.assertEqual(self.get_constraints_for_column(Author, "name"), [])
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_add_unique_to_charfield(self):
|
|
# Create the table and verify no initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
self.assertEqual(self.get_constraints_for_column(Author, "name"), [])
|
|
# Alter to add unique=True and create 2 indexes.
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=255, unique=True)
|
|
new_field.set_attributes_from_name("name")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Author, "name"),
|
|
["schema_author_name_1fbc5617_like", "schema_author_name_1fbc5617_uniq"],
|
|
)
|
|
# Remove unique=True to drop both indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
self.assertEqual(self.get_constraints_for_column(Author, "name"), [])
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_add_index_to_textfield(self):
|
|
# Create the table and verify no initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
self.assertEqual(self.get_constraints_for_column(Note, "info"), [])
|
|
# Alter to add db_index=True and create 2 indexes.
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = TextField(db_index=True)
|
|
new_field.set_attributes_from_name("info")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Note, "info"),
|
|
["schema_note_info_4b0ea695", "schema_note_info_4b0ea695_like"],
|
|
)
|
|
# Remove db_index=True to drop both indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, new_field, old_field, strict=True)
|
|
self.assertEqual(self.get_constraints_for_column(Note, "info"), [])
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_add_unique_to_charfield_with_db_index(self):
|
|
# Create the table and verify initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(BookWithoutAuthor)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff", "schema_book_title_2dfb2dff_like"],
|
|
)
|
|
# Alter to add unique=True (should replace the index)
|
|
old_field = BookWithoutAuthor._meta.get_field("title")
|
|
new_field = CharField(max_length=100, db_index=True, unique=True)
|
|
new_field.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff_like", "schema_book_title_2dfb2dff_uniq"],
|
|
)
|
|
# Alter to remove unique=True (should drop unique index)
|
|
new_field2 = CharField(max_length=100, db_index=True)
|
|
new_field2.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff", "schema_book_title_2dfb2dff_like"],
|
|
)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_remove_unique_and_db_index_from_charfield(self):
|
|
# Create the table and verify initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(BookWithoutAuthor)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff", "schema_book_title_2dfb2dff_like"],
|
|
)
|
|
# Alter to add unique=True (should replace the index)
|
|
old_field = BookWithoutAuthor._meta.get_field("title")
|
|
new_field = CharField(max_length=100, db_index=True, unique=True)
|
|
new_field.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff_like", "schema_book_title_2dfb2dff_uniq"],
|
|
)
|
|
# Alter to remove both unique=True and db_index=True (should drop all indexes)
|
|
new_field2 = CharField(max_length=100)
|
|
new_field2.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"), []
|
|
)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_swap_unique_and_db_index_with_charfield(self):
|
|
# Create the table and verify initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(BookWithoutAuthor)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff", "schema_book_title_2dfb2dff_like"],
|
|
)
|
|
# Alter to set unique=True and remove db_index=True (should replace the index)
|
|
old_field = BookWithoutAuthor._meta.get_field("title")
|
|
new_field = CharField(max_length=100, unique=True)
|
|
new_field.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff_like", "schema_book_title_2dfb2dff_uniq"],
|
|
)
|
|
# Alter to set db_index=True and remove unique=True (should restore index)
|
|
new_field2 = CharField(max_length=100, db_index=True)
|
|
new_field2.set_attributes_from_name("title")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(BookWithoutAuthor, "title"),
|
|
["schema_book_title_2dfb2dff", "schema_book_title_2dfb2dff_like"],
|
|
)
|
|
|
|
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific")
|
|
def test_alter_field_add_db_index_to_charfield_with_unique(self):
|
|
# Create the table and verify initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Tag)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Tag, "slug"),
|
|
["schema_tag_slug_2c418ba3_like", "schema_tag_slug_key"],
|
|
)
|
|
# Alter to add db_index=True
|
|
old_field = Tag._meta.get_field("slug")
|
|
new_field = SlugField(db_index=True, unique=True)
|
|
new_field.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Tag, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Tag, "slug"),
|
|
["schema_tag_slug_2c418ba3_like", "schema_tag_slug_key"],
|
|
)
|
|
# Alter to remove db_index=True
|
|
new_field2 = SlugField(unique=True)
|
|
new_field2.set_attributes_from_name("slug")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Tag, new_field, new_field2, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Tag, "slug"),
|
|
["schema_tag_slug_2c418ba3_like", "schema_tag_slug_key"],
|
|
)
|
|
|
|
def test_alter_field_add_index_to_integerfield(self):
|
|
# Create the table and verify no initial indexes.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
self.assertEqual(self.get_constraints_for_column(Author, "weight"), [])
|
|
|
|
# Alter to add db_index=True and create index.
|
|
old_field = Author._meta.get_field("weight")
|
|
new_field = IntegerField(null=True, db_index=True)
|
|
new_field.set_attributes_from_name("weight")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_constraints_for_column(Author, "weight"),
|
|
["schema_author_weight_587740f9"],
|
|
)
|
|
|
|
# Remove db_index=True to drop index.
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
self.assertEqual(self.get_constraints_for_column(Author, "weight"), [])
|
|
|
|
def test_alter_pk_with_self_referential_field(self):
|
|
"""
|
|
Changing the primary key field name of a model with a self-referential
|
|
foreign key (#26384).
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Node)
|
|
old_field = Node._meta.get_field("node_id")
|
|
new_field = AutoField(primary_key=True)
|
|
new_field.set_attributes_from_name("id")
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Node, old_field, new_field, strict=True)
|
|
self.assertForeignKeyExists(Node, "parent_id", Node._meta.db_table)
|
|
|
|
@mock.patch("django.db.backends.base.schema.datetime")
|
|
@mock.patch("django.db.backends.base.schema.timezone")
|
|
def test_add_datefield_and_datetimefield_use_effective_default(
|
|
self, mocked_datetime, mocked_tz
|
|
):
|
|
"""
|
|
effective_default() should be used for DateField, DateTimeField, and
|
|
TimeField if auto_now or auto_now_add is set (#25005).
|
|
"""
|
|
now = datetime.datetime(month=1, day=1, year=2000, hour=1, minute=1)
|
|
now_tz = datetime.datetime(
|
|
month=1, day=1, year=2000, hour=1, minute=1, tzinfo=datetime.timezone.utc
|
|
)
|
|
mocked_datetime.now = mock.MagicMock(return_value=now)
|
|
mocked_tz.now = mock.MagicMock(return_value=now_tz)
|
|
# Create the table
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Check auto_now/auto_now_add attributes are not defined
|
|
columns = self.column_classes(Author)
|
|
self.assertNotIn("dob_auto_now", columns)
|
|
self.assertNotIn("dob_auto_now_add", columns)
|
|
self.assertNotIn("dtob_auto_now", columns)
|
|
self.assertNotIn("dtob_auto_now_add", columns)
|
|
self.assertNotIn("tob_auto_now", columns)
|
|
self.assertNotIn("tob_auto_now_add", columns)
|
|
# Create a row
|
|
Author.objects.create(name="Anonymous1")
|
|
# Ensure fields were added with the correct defaults
|
|
dob_auto_now = DateField(auto_now=True)
|
|
dob_auto_now.set_attributes_from_name("dob_auto_now")
|
|
self.check_added_field_default(
|
|
editor,
|
|
Author,
|
|
dob_auto_now,
|
|
"dob_auto_now",
|
|
now.date(),
|
|
cast_function=lambda x: x.date(),
|
|
)
|
|
dob_auto_now_add = DateField(auto_now_add=True)
|
|
dob_auto_now_add.set_attributes_from_name("dob_auto_now_add")
|
|
self.check_added_field_default(
|
|
editor,
|
|
Author,
|
|
dob_auto_now_add,
|
|
"dob_auto_now_add",
|
|
now.date(),
|
|
cast_function=lambda x: x.date(),
|
|
)
|
|
dtob_auto_now = DateTimeField(auto_now=True)
|
|
dtob_auto_now.set_attributes_from_name("dtob_auto_now")
|
|
self.check_added_field_default(
|
|
editor,
|
|
Author,
|
|
dtob_auto_now,
|
|
"dtob_auto_now",
|
|
now,
|
|
)
|
|
dt_tm_of_birth_auto_now_add = DateTimeField(auto_now_add=True)
|
|
dt_tm_of_birth_auto_now_add.set_attributes_from_name("dtob_auto_now_add")
|
|
self.check_added_field_default(
|
|
editor,
|
|
Author,
|
|
dt_tm_of_birth_auto_now_add,
|
|
"dtob_auto_now_add",
|
|
now,
|
|
)
|
|
tob_auto_now = TimeField(auto_now=True)
|
|
tob_auto_now.set_attributes_from_name("tob_auto_now")
|
|
self.check_added_field_default(
|
|
editor,
|
|
Author,
|
|
tob_auto_now,
|
|
"tob_auto_now",
|
|
now.time(),
|
|
cast_function=lambda x: x.time(),
|
|
)
|
|
tob_auto_now_add = TimeField(auto_now_add=True)
|
|
tob_auto_now_add.set_attributes_from_name("tob_auto_now_add")
|
|
self.check_added_field_default(
|
|
editor,
|
|
Author,
|
|
tob_auto_now_add,
|
|
"tob_auto_now_add",
|
|
now.time(),
|
|
cast_function=lambda x: x.time(),
|
|
)
|
|
|
|
def test_namespaced_db_table_create_index_name(self):
|
|
"""
|
|
Table names are stripped of their namespace/schema before being used to
|
|
generate index names.
|
|
"""
|
|
with connection.schema_editor() as editor:
|
|
max_name_length = connection.ops.max_name_length() or 200
|
|
namespace = "n" * max_name_length
|
|
table_name = "t" * max_name_length
|
|
namespaced_table_name = '"%s"."%s"' % (namespace, table_name)
|
|
self.assertEqual(
|
|
editor._create_index_name(table_name, []),
|
|
editor._create_index_name(namespaced_table_name, []),
|
|
)
|
|
|
|
@unittest.skipUnless(
|
|
connection.vendor == "oracle", "Oracle specific db_table syntax"
|
|
)
|
|
def test_creation_with_db_table_double_quotes(self):
|
|
oracle_user = connection.creation._test_database_user()
|
|
|
|
class Student(Model):
|
|
name = CharField(max_length=30)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
db_table = '"%s"."DJANGO_STUDENT_TABLE"' % oracle_user
|
|
|
|
class Document(Model):
|
|
name = CharField(max_length=30)
|
|
students = ManyToManyField(Student)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
apps = new_apps
|
|
db_table = '"%s"."DJANGO_DOCUMENT_TABLE"' % oracle_user
|
|
|
|
self.isolated_local_models = [Student, Document]
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Student)
|
|
editor.create_model(Document)
|
|
|
|
doc = Document.objects.create(name="Test Name")
|
|
student = Student.objects.create(name="Some man")
|
|
doc.students.add(student)
|
|
|
|
@isolate_apps("schema")
|
|
@unittest.skipUnless(
|
|
connection.vendor == "postgresql", "PostgreSQL specific db_table syntax."
|
|
)
|
|
def test_namespaced_db_table_foreign_key_reference(self):
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("CREATE SCHEMA django_schema_tests")
|
|
|
|
def delete_schema():
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("DROP SCHEMA django_schema_tests CASCADE")
|
|
|
|
self.addCleanup(delete_schema)
|
|
|
|
class Author(Model):
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Book(Model):
|
|
class Meta:
|
|
app_label = "schema"
|
|
db_table = '"django_schema_tests"."schema_book"'
|
|
|
|
author = ForeignKey(Author, CASCADE)
|
|
author.set_attributes_from_name("author")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
editor.add_field(Book, author)
|
|
|
|
def test_rename_table_renames_deferred_sql_references(self):
|
|
atomic_rename = connection.features.supports_atomic_references_rename
|
|
with connection.schema_editor(atomic=atomic_rename) as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
editor.alter_db_table(Author, "schema_author", "schema_renamed_author")
|
|
editor.alter_db_table(Author, "schema_book", "schema_renamed_book")
|
|
try:
|
|
self.assertGreater(len(editor.deferred_sql), 0)
|
|
for statement in editor.deferred_sql:
|
|
self.assertIs(statement.references_table("schema_author"), False)
|
|
self.assertIs(statement.references_table("schema_book"), False)
|
|
finally:
|
|
editor.alter_db_table(Author, "schema_renamed_author", "schema_author")
|
|
editor.alter_db_table(Author, "schema_renamed_book", "schema_book")
|
|
|
|
def test_rename_column_renames_deferred_sql_references(self):
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
editor.create_model(Book)
|
|
old_title = Book._meta.get_field("title")
|
|
new_title = CharField(max_length=100, db_index=True)
|
|
new_title.set_attributes_from_name("renamed_title")
|
|
editor.alter_field(Book, old_title, new_title)
|
|
old_author = Book._meta.get_field("author")
|
|
new_author = ForeignKey(Author, CASCADE)
|
|
new_author.set_attributes_from_name("renamed_author")
|
|
editor.alter_field(Book, old_author, new_author)
|
|
self.assertGreater(len(editor.deferred_sql), 0)
|
|
for statement in editor.deferred_sql:
|
|
self.assertIs(statement.references_column("book", "title"), False)
|
|
self.assertIs(statement.references_column("book", "author_id"), False)
|
|
|
|
@isolate_apps("schema")
|
|
def test_referenced_field_without_constraint_rename_inside_atomic_block(self):
|
|
"""
|
|
Foreign keys without database level constraint don't prevent the field
|
|
they reference from being renamed in an atomic block.
|
|
"""
|
|
|
|
class Foo(Model):
|
|
field = CharField(max_length=255, unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Bar(Model):
|
|
foo = ForeignKey(Foo, CASCADE, to_field="field", db_constraint=False)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
self.isolated_local_models = [Foo, Bar]
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
editor.create_model(Bar)
|
|
|
|
new_field = CharField(max_length=255, unique=True)
|
|
new_field.set_attributes_from_name("renamed")
|
|
with connection.schema_editor(atomic=True) as editor:
|
|
editor.alter_field(Foo, Foo._meta.get_field("field"), new_field)
|
|
|
|
@isolate_apps("schema")
|
|
def test_referenced_table_without_constraint_rename_inside_atomic_block(self):
|
|
"""
|
|
Foreign keys without database level constraint don't prevent the table
|
|
they reference from being renamed in an atomic block.
|
|
"""
|
|
|
|
class Foo(Model):
|
|
field = CharField(max_length=255, unique=True)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
class Bar(Model):
|
|
foo = ForeignKey(Foo, CASCADE, to_field="field", db_constraint=False)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
self.isolated_local_models = [Foo, Bar]
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
editor.create_model(Bar)
|
|
|
|
new_field = CharField(max_length=255, unique=True)
|
|
new_field.set_attributes_from_name("renamed")
|
|
with connection.schema_editor(atomic=True) as editor:
|
|
editor.alter_db_table(Foo, Foo._meta.db_table, "renamed_table")
|
|
Foo._meta.db_table = "renamed_table"
|
|
|
|
@isolate_apps("schema")
|
|
@skipUnlessDBFeature("supports_collation_on_charfield")
|
|
def test_db_collation_charfield(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
class Foo(Model):
|
|
field = CharField(max_length=255, db_collation=collation)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
self.isolated_local_models = [Foo]
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
|
|
self.assertEqual(
|
|
self.get_column_collation(Foo._meta.db_table, "field"),
|
|
collation,
|
|
)
|
|
|
|
@isolate_apps("schema")
|
|
@skipUnlessDBFeature("supports_collation_on_textfield")
|
|
def test_db_collation_textfield(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
class Foo(Model):
|
|
field = TextField(db_collation=collation)
|
|
|
|
class Meta:
|
|
app_label = "schema"
|
|
|
|
self.isolated_local_models = [Foo]
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Foo)
|
|
|
|
self.assertEqual(
|
|
self.get_column_collation(Foo._meta.db_table, "field"),
|
|
collation,
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_collation_on_charfield")
|
|
def test_add_field_db_collation(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
|
|
new_field = CharField(max_length=255, db_collation=collation)
|
|
new_field.set_attributes_from_name("alias")
|
|
with connection.schema_editor() as editor:
|
|
editor.add_field(Author, new_field)
|
|
columns = self.column_classes(Author)
|
|
self.assertEqual(
|
|
columns["alias"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
self.assertEqual(columns["alias"][1][8], collation)
|
|
|
|
@skipUnlessDBFeature("supports_collation_on_charfield")
|
|
def test_alter_field_db_collation(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=255, db_collation=collation)
|
|
new_field.set_attributes_from_name("name")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_collation(Author._meta.db_table, "name"),
|
|
collation,
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
self.assertIsNone(self.get_column_collation(Author._meta.db_table, "name"))
|
|
|
|
@skipUnlessDBFeature("supports_collation_on_charfield")
|
|
def test_alter_field_type_preserve_db_collation(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
|
|
old_field = Author._meta.get_field("name")
|
|
new_field = CharField(max_length=255, db_collation=collation)
|
|
new_field.set_attributes_from_name("name")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field, strict=True)
|
|
self.assertEqual(
|
|
self.get_column_collation(Author._meta.db_table, "name"),
|
|
collation,
|
|
)
|
|
# Changing a field type should preserve the collation.
|
|
old_field = new_field
|
|
new_field = CharField(max_length=511, db_collation=collation)
|
|
new_field.set_attributes_from_name("name")
|
|
new_field.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field, old_field, strict=True)
|
|
# Collation is preserved.
|
|
self.assertEqual(
|
|
self.get_column_collation(Author._meta.db_table, "name"),
|
|
collation,
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_collation_on_charfield")
|
|
def test_alter_primary_key_db_collation(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Thing)
|
|
|
|
old_field = Thing._meta.get_field("when")
|
|
new_field = CharField(max_length=1, db_collation=collation, primary_key=True)
|
|
new_field.set_attributes_from_name("when")
|
|
new_field.model = Thing
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Thing, old_field, new_field, strict=True)
|
|
self.assertEqual(self.get_primary_key(Thing._meta.db_table), "when")
|
|
self.assertEqual(
|
|
self.get_column_collation(Thing._meta.db_table, "when"),
|
|
collation,
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Thing, new_field, old_field, strict=True)
|
|
self.assertEqual(self.get_primary_key(Thing._meta.db_table), "when")
|
|
self.assertIsNone(self.get_column_collation(Thing._meta.db_table, "when"))
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_collation_on_charfield", "supports_collation_on_textfield"
|
|
)
|
|
def test_alter_field_type_and_db_collation(self):
|
|
collation = connection.features.test_collations.get("non_default")
|
|
if not collation:
|
|
self.skipTest("Language collations are not supported.")
|
|
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Note)
|
|
|
|
old_field = Note._meta.get_field("info")
|
|
new_field = CharField(max_length=255, db_collation=collation)
|
|
new_field.set_attributes_from_name("info")
|
|
new_field.model = Note
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, old_field, new_field, strict=True)
|
|
columns = self.column_classes(Note)
|
|
self.assertEqual(
|
|
columns["info"][0],
|
|
connection.features.introspected_field_types["CharField"],
|
|
)
|
|
self.assertEqual(columns["info"][1][8], collation)
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Note, new_field, old_field, strict=True)
|
|
columns = self.column_classes(Note)
|
|
self.assertEqual(columns["info"][0], "TextField")
|
|
self.assertIsNone(columns["info"][1][8])
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_collation_on_charfield",
|
|
"supports_non_deterministic_collations",
|
|
)
|
|
def test_ci_cs_db_collation(self):
|
|
cs_collation = connection.features.test_collations.get("cs")
|
|
ci_collation = connection.features.test_collations.get("ci")
|
|
try:
|
|
if connection.vendor == "mysql":
|
|
cs_collation = "latin1_general_cs"
|
|
elif connection.vendor == "postgresql":
|
|
cs_collation = "en-x-icu"
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
"CREATE COLLATION IF NOT EXISTS case_insensitive "
|
|
"(provider = icu, locale = 'und-u-ks-level2', "
|
|
"deterministic = false)"
|
|
)
|
|
ci_collation = "case_insensitive"
|
|
# Create the table.
|
|
with connection.schema_editor() as editor:
|
|
editor.create_model(Author)
|
|
# Case-insensitive collation.
|
|
old_field = Author._meta.get_field("name")
|
|
new_field_ci = CharField(max_length=255, db_collation=ci_collation)
|
|
new_field_ci.set_attributes_from_name("name")
|
|
new_field_ci.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, old_field, new_field_ci, strict=True)
|
|
Author.objects.create(name="ANDREW")
|
|
self.assertIs(Author.objects.filter(name="Andrew").exists(), True)
|
|
# Case-sensitive collation.
|
|
new_field_cs = CharField(max_length=255, db_collation=cs_collation)
|
|
new_field_cs.set_attributes_from_name("name")
|
|
new_field_cs.model = Author
|
|
with connection.schema_editor() as editor:
|
|
editor.alter_field(Author, new_field_ci, new_field_cs, strict=True)
|
|
self.assertIs(Author.objects.filter(name="Andrew").exists(), False)
|
|
finally:
|
|
if connection.vendor == "postgresql":
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("DROP COLLATION IF EXISTS case_insensitive")
|