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Code Issues 32 Releases Wiki Activity

[1.8.x] Fixed #24972 -- Fixed removing unique_together indexes on MySQL.

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Backport of 65296b3be3 from master
This commit is contained in:
Adam Brenecki
2015-06-12 15:52:08 +09:30
committed by Tim Graham
parent c58755d875
commit 0e3a80fa68
4 changed files with 38 additions and 6 deletions
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27
tests/schema/tests.py
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@@ -20,8 +20,9 @@ from django.test import TransactionTestCase, skipIfDBFeature
from .fields import CustomManyToManyField, InheritedManyToManyField
from .models import (
Author, AuthorWithDefaultHeight, AuthorWithEvenLongerName, Book, BookWeak,
BookWithLongName, BookWithO2O, BookWithSlug, IntegerPK, Note, NoteRename,
Tag, TagIndexed, TagM2MTest, TagUniqueRename, Thing, UniqueTest, new_apps,
BookWithLongName, BookWithO2O, BookWithoutAuthor, BookWithSlug, IntegerPK,
Note, NoteRename, Tag, TagIndexed, TagM2MTest, TagUniqueRename, Thing,
UniqueTest, new_apps,
)
@@ -1185,6 +1186,28 @@ class SchemaTests(TransactionTestCase):
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)
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_index_together(self):
"""
Tests removing and adding index_together constraints on a model.