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4608d34b34
When all values of a field with a db_default are DatabaseDefault, which is the case most of the time, there is no point in specifying explicit DEFAULT for all INSERT VALUES as that's what the database will do anyway if not specified. In the case of PostgreSQL doing so can even be harmful as it prevents the usage of the UNNEST strategy and in the case of Oracle, which doesn't support the usage of the DEFAULT keyword, it unnecessarily requires providing literal db defaults. Thanks Lily Foote for the review.
150 lines
4.4 KiB
Python
150 lines
4.4 KiB
Python
import datetime
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import uuid
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from decimal import Decimal
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from django.db import models
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from django.db.models.functions import Now
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from django.utils import timezone
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try:
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from PIL import Image
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except ImportError:
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Image = None
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class Country(models.Model):
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name = models.CharField(max_length=255)
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iso_two_letter = models.CharField(max_length=2)
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description = models.TextField()
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields=["iso_two_letter", "name"],
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name="country_name_iso_unique",
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),
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]
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class ProxyCountry(Country):
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class Meta:
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proxy = True
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class ProxyProxyCountry(ProxyCountry):
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class Meta:
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proxy = True
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class ProxyMultiCountry(ProxyCountry):
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pass
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class ProxyMultiProxyCountry(ProxyMultiCountry):
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class Meta:
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proxy = True
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class Place(models.Model):
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name = models.CharField(max_length=100)
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class Meta:
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abstract = True
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class Restaurant(Place):
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pass
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class Pizzeria(Restaurant):
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pass
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class State(models.Model):
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two_letter_code = models.CharField(max_length=2, primary_key=True)
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class TwoFields(models.Model):
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f1 = models.IntegerField(unique=True)
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f2 = models.IntegerField(unique=True)
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name = models.CharField(max_length=15, null=True)
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class FieldsWithDbColumns(models.Model):
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rank = models.IntegerField(unique=True, db_column="rAnK")
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name = models.CharField(max_length=15, null=True, db_column="oTheRNaMe")
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class UpsertConflict(models.Model):
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number = models.IntegerField(unique=True)
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rank = models.IntegerField()
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name = models.CharField(max_length=15)
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class NoFields(models.Model):
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pass
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class SmallAutoFieldModel(models.Model):
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id = models.SmallAutoField(primary_key=True)
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class BigAutoFieldModel(models.Model):
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id = models.BigAutoField(primary_key=True)
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class NullableFields(models.Model):
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# Fields in db.backends.oracle.BulkInsertMapper
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big_int_filed = models.BigIntegerField(null=True, default=1)
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binary_field = models.BinaryField(null=True, default=b"data")
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date_field = models.DateField(null=True, default=timezone.now)
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datetime_field = models.DateTimeField(null=True, default=timezone.now)
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decimal_field = models.DecimalField(
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null=True, max_digits=2, decimal_places=1, default=Decimal("1.1")
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)
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duration_field = models.DurationField(null=True, default=datetime.timedelta(1))
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float_field = models.FloatField(null=True, default=3.2)
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integer_field = models.IntegerField(null=True, default=2)
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null_boolean_field = models.BooleanField(null=True, default=False)
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positive_big_integer_field = models.PositiveBigIntegerField(
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null=True, default=2**63 - 1
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)
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positive_integer_field = models.PositiveIntegerField(null=True, default=3)
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positive_small_integer_field = models.PositiveSmallIntegerField(
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null=True, default=4
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)
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small_integer_field = models.SmallIntegerField(null=True, default=5)
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time_field = models.TimeField(null=True, default=timezone.now)
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auto_field = models.ForeignKey(NoFields, on_delete=models.CASCADE, null=True)
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small_auto_field = models.ForeignKey(
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SmallAutoFieldModel, on_delete=models.CASCADE, null=True
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)
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big_auto_field = models.ForeignKey(
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BigAutoFieldModel, on_delete=models.CASCADE, null=True
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)
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# Fields not required in BulkInsertMapper
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char_field = models.CharField(null=True, max_length=4, default="char")
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email_field = models.EmailField(null=True, default="user@example.com")
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file_field = models.FileField(null=True, default="file.txt")
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file_path_field = models.FilePathField(path="/tmp", null=True, default="file.txt")
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generic_ip_address_field = models.GenericIPAddressField(
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null=True, default="127.0.0.1"
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)
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if Image:
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image_field = models.ImageField(null=True, default="image.jpg")
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slug_field = models.SlugField(null=True, default="slug")
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text_field = models.TextField(null=True, default="text")
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url_field = models.URLField(null=True, default="/")
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uuid_field = models.UUIDField(null=True, default=uuid.uuid4)
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class RelatedModel(models.Model):
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name = models.CharField(max_length=15, null=True)
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country = models.OneToOneField(Country, models.CASCADE, primary_key=True)
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big_auto_fields = models.ManyToManyField(BigAutoFieldModel)
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class DbDefaultModel(models.Model):
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name = models.CharField(max_length=10)
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created_at = models.DateTimeField(db_default=Now())
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