255 строки
8.2 KiB
Python
255 строки
8.2 KiB
Python
# Copyright (c) Microsoft Corporation.
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# Licensed under the BSD license.
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import datetime
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import uuid
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from django import VERSION
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from django.db import models
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from django.db.models import Q
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from django.utils import timezone
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# We are using this Mixin to test casting of BigAuto and Auto fields
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class BigAutoFieldMixin(models.Model):
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id = models.BigAutoField(primary_key=True)
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class Meta:
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abstract = True
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class Author(models.Model):
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name = models.CharField(max_length=100)
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class Editor(BigAutoFieldMixin, models.Model):
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name = models.CharField(max_length=100)
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class Post(BigAutoFieldMixin, models.Model):
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title = models.CharField('title', max_length=255)
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author = models.ForeignKey(Author, models.CASCADE)
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# Optional secondary author
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alt_editor = models.ForeignKey(Editor, models.SET_NULL, blank=True, null=True)
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class Meta:
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unique_together = (
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('author', 'title', 'alt_editor'),
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)
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def __str__(self):
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return self.title
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class Comment(models.Model):
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post = models.ForeignKey(Post, on_delete=models.CASCADE)
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text = models.TextField('text')
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created_at = models.DateTimeField(default=timezone.now)
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def __str__(self):
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return self.text
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class UUIDModel(models.Model):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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def __str__(self):
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return self.pk
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class ModelWithNullableFieldsOfDifferentTypes(models.Model):
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# Issue https://github.com/microsoft/mssql-django/issues/340
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# Ensures the integrity of bulk updates with different types
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int_value = models.IntegerField(null=True)
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name = models.CharField(max_length=100, null=True)
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date = models.DateTimeField(null=True)
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class TestUniqueNullableModel(models.Model):
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# Issue https://github.com/ESSolutions/django-mssql-backend/issues/38:
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# This field started off as unique=True *and* null=True so it is implemented with a filtered unique index
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# Then it is made non-nullable by a subsequent migration, to check this is correctly handled (the index
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# should be dropped, then a normal unique constraint should be added, now that the column is not nullable)
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test_field = models.CharField(max_length=100, unique=True)
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# Issue https://github.com/ESSolutions/django-mssql-backend/issues/45 (case 1)
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# Field used for testing changing the 'type' of a field that's both unique & nullable
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x = models.CharField(max_length=11, null=True, unique=True)
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# A variant of Issue https://github.com/microsoft/mssql-django/issues/14 case (b)
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# but for a unique index (not db_index)
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y_renamed = models.IntegerField(null=True, unique=True)
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class TestNullableUniqueTogetherModel(models.Model):
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class Meta:
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unique_together = (('a', 'b', 'c'),)
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# Issue https://github.com/ESSolutions/django-mssql-backend/issues/45 (case 2)
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# Fields used for testing changing the type of a field that is in a `unique_together`
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a = models.CharField(max_length=51, null=True)
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b = models.CharField(max_length=50)
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c = models.CharField(max_length=50)
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class TestRemoveOneToOneFieldModel(models.Model):
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# Issue https://github.com/ESSolutions/django-mssql-backend/pull/51
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# Fields used for testing removing OneToOne field. Verifies that delete_unique
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# does not try to remove indexes that have already been removed
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# b = models.OneToOneField('self', on_delete=models.SET_NULL, null=True)
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a = models.CharField(max_length=50)
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class TestIndexesRetainedRenamed(models.Model):
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# Issue https://github.com/microsoft/mssql-django/issues/14
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# In all these cases the column index should still exist afterwards
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# case (a) `a` starts out not nullable, but then is changed to be nullable
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a = models.IntegerField(db_index=True, null=True)
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# case (b) column originally called `b` is renamed
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b_renamed = models.IntegerField(db_index=True)
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# case (c) this entire model is renamed - this is just a column whose index can be checked afterwards
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c = models.IntegerField(db_index=True)
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class M2MOtherModel(models.Model):
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name = models.CharField(max_length=10)
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class TestRenameManyToManyFieldModel(models.Model):
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# Issue https://github.com/microsoft/mssql-django/issues/86
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others_renamed = models.ManyToManyField(M2MOtherModel)
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class Topping(models.Model):
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name = models.UUIDField(primary_key=True, default=uuid.uuid4)
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class Pizza(models.Model):
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name = models.UUIDField(primary_key=True, default=uuid.uuid4)
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toppings = models.ManyToManyField(Topping)
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def __str__(self):
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return "%s (%s)" % (
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self.name,
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", ".join(topping.name for topping in self.toppings.all()),
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)
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class TestUnsupportableUniqueConstraint(models.Model):
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class Meta:
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managed = False
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constraints = [
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models.UniqueConstraint(
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name='or_constraint',
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fields=['_type'],
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condition=(Q(status='in_progress') | Q(status='needs_changes')),
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),
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]
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_type = models.CharField(max_length=50)
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status = models.CharField(max_length=50)
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class TestSupportableUniqueConstraint(models.Model):
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class Meta:
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constraints = [
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models.UniqueConstraint(
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name='and_constraint',
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fields=['_type'],
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condition=(
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Q(status='in_progress') & Q(status='needs_changes') & Q(status='published')
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),
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),
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models.UniqueConstraint(
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name='in_constraint',
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fields=['_type'],
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condition=(Q(status__in=['in_progress', 'needs_changes'])),
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),
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]
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_type = models.CharField(max_length=50)
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status = models.CharField(max_length=50)
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class BinaryData(models.Model):
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binary = models.BinaryField(null=True)
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if VERSION >= (3, 1):
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class JSONModel(models.Model):
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value = models.JSONField()
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class Meta:
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required_db_features = {'supports_json_field'}
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if VERSION >= (3, 2):
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class TestCheckConstraintWithUnicode(models.Model):
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name = models.CharField(max_length=100)
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class Meta:
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required_db_features = {
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'supports_table_check_constraints',
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}
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constraints = [
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models.CheckConstraint(
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check=~models.Q(name__startswith='\u00f7'),
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name='name_does_not_starts_with_\u00f7',
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)
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]
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class Question(models.Model):
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question_text = models.CharField(max_length=200)
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pub_date = models.DateTimeField('date published')
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def __str__(self):
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return self.question_text
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def was_published_recently(self):
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return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
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class Choice(models.Model):
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question = models.ForeignKey(Question, on_delete=models.CASCADE, null=True)
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choice_text = models.CharField(max_length=200)
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votes = models.IntegerField(default=0)
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class Meta:
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unique_together = (('question', 'choice_text'))
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class Customer_name(models.Model):
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Customer_name = models.CharField(max_length=100)
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class Meta:
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ordering = ['Customer_name']
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class Customer_address(models.Model):
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Customer_name = models.ForeignKey(Customer_name, on_delete=models.CASCADE)
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Customer_address = models.CharField(max_length=100)
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class Meta:
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ordering = ['Customer_address']
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class TimeZone(models.Model):
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date = models.DateTimeField(default=timezone.now)
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class Number(models.Model):
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integer = models.BigIntegerField(db_column="the_integer")
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float = models.FloatField(null=True, db_column="the_float")
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decimal_value = models.DecimalField(max_digits=20, decimal_places=17, null=True)
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def __str__(self):
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return "%i, %.3f, %.17f" % (self.integer, self.float, self.decimal_value)
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class Publisher(models.Model):
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name = models.CharField(max_length=100)
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class Book(models.Model):
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name = models.CharField(max_length=100)
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authors = models.ManyToManyField(Author, related_name="books")
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publisher = models.ForeignKey(
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Publisher,
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models.CASCADE,
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related_name="books",
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db_column="publisher_id_column",
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)
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updated = models.DateTimeField(auto_now=True)
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