mirror of https://github.com/django/django.git
721 lines
17 KiB
Python
721 lines
17 KiB
Python
"""
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Various complex queries that have been problematic in the past.
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"""
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import threading
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from django.db import models
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class DumbCategory(models.Model):
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pass
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class ProxyCategory(DumbCategory):
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class Meta:
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proxy = True
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class NamedCategory(DumbCategory):
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name = models.CharField(max_length=10)
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def __str__(self):
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return self.name
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class Tag(models.Model):
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name = models.CharField(max_length=10)
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parent = models.ForeignKey(
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'self',
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models.SET_NULL,
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blank=True, null=True,
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related_name='children',
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)
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category = models.ForeignKey(NamedCategory, models.SET_NULL, null=True, default=None)
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class Meta:
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ordering = ['name']
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def __str__(self):
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return self.name
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class Note(models.Model):
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note = models.CharField(max_length=100)
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misc = models.CharField(max_length=10)
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tag = models.ForeignKey(Tag, models.SET_NULL, blank=True, null=True)
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class Meta:
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ordering = ['note']
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def __str__(self):
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return self.note
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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# Regression for #13227 -- having an attribute that
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# is unpicklable doesn't stop you from cloning queries
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# that use objects of that type as an argument.
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self.lock = threading.Lock()
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class Annotation(models.Model):
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name = models.CharField(max_length=10)
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tag = models.ForeignKey(Tag, models.CASCADE)
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notes = models.ManyToManyField(Note)
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def __str__(self):
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return self.name
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class ExtraInfo(models.Model):
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info = models.CharField(max_length=100)
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note = models.ForeignKey(Note, models.CASCADE, null=True)
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value = models.IntegerField(null=True)
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class Meta:
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ordering = ['info']
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def __str__(self):
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return self.info
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class Author(models.Model):
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name = models.CharField(max_length=10)
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num = models.IntegerField(unique=True)
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extra = models.ForeignKey(ExtraInfo, models.CASCADE)
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class Meta:
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ordering = ['name']
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def __str__(self):
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return self.name
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class Item(models.Model):
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name = models.CharField(max_length=10)
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created = models.DateTimeField()
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modified = models.DateTimeField(blank=True, null=True)
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tags = models.ManyToManyField(Tag, blank=True)
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creator = models.ForeignKey(Author, models.CASCADE)
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note = models.ForeignKey(Note, models.CASCADE)
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class Meta:
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ordering = ['-note', 'name']
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def __str__(self):
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return self.name
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class Report(models.Model):
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name = models.CharField(max_length=10)
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creator = models.ForeignKey(Author, models.SET_NULL, to_field='num', null=True)
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def __str__(self):
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return self.name
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class ReportComment(models.Model):
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report = models.ForeignKey(Report, models.CASCADE)
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class Ranking(models.Model):
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rank = models.IntegerField()
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author = models.ForeignKey(Author, models.CASCADE)
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class Meta:
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# A complex ordering specification. Should stress the system a bit.
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ordering = ('author__extra__note', 'author__name', 'rank')
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def __str__(self):
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return '%d: %s' % (self.rank, self.author.name)
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class Cover(models.Model):
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title = models.CharField(max_length=50)
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item = models.ForeignKey(Item, models.CASCADE)
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class Meta:
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ordering = ['item']
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def __str__(self):
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return self.title
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class Number(models.Model):
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num = models.IntegerField()
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def __str__(self):
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return str(self.num)
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# Symmetrical m2m field with a normal field using the reverse accessor name
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# ("valid").
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class Valid(models.Model):
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valid = models.CharField(max_length=10)
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parent = models.ManyToManyField('self')
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class Meta:
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ordering = ['valid']
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# Some funky cross-linked models for testing a couple of infinite recursion
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# cases.
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class X(models.Model):
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y = models.ForeignKey('Y', models.CASCADE)
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class Y(models.Model):
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x1 = models.ForeignKey(X, models.CASCADE, related_name='y1')
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# Some models with a cycle in the default ordering. This would be bad if we
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# didn't catch the infinite loop.
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class LoopX(models.Model):
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y = models.ForeignKey('LoopY', models.CASCADE)
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class Meta:
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ordering = ['y']
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class LoopY(models.Model):
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x = models.ForeignKey(LoopX, models.CASCADE)
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class Meta:
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ordering = ['x']
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class LoopZ(models.Model):
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z = models.ForeignKey('self', models.CASCADE)
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class Meta:
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ordering = ['z']
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# A model and custom default manager combination.
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class CustomManager(models.Manager):
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def get_queryset(self):
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qs = super().get_queryset()
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return qs.filter(public=True, tag__name='t1')
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class ManagedModel(models.Model):
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data = models.CharField(max_length=10)
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tag = models.ForeignKey(Tag, models.CASCADE)
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public = models.BooleanField(default=True)
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objects = CustomManager()
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normal_manager = models.Manager()
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def __str__(self):
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return self.data
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# An inter-related setup with multiple paths from Child to Detail.
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class Detail(models.Model):
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data = models.CharField(max_length=10)
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class MemberManager(models.Manager):
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def get_queryset(self):
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return super().get_queryset().select_related("details")
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class Member(models.Model):
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name = models.CharField(max_length=10)
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details = models.OneToOneField(Detail, models.CASCADE, primary_key=True)
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objects = MemberManager()
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class Child(models.Model):
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person = models.OneToOneField(Member, models.CASCADE, primary_key=True)
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parent = models.ForeignKey(Member, models.CASCADE, related_name="children")
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# Custom primary keys interfered with ordering in the past.
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class CustomPk(models.Model):
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name = models.CharField(max_length=10, primary_key=True)
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extra = models.CharField(max_length=10)
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class Meta:
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ordering = ['name', 'extra']
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class Related(models.Model):
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custom = models.ForeignKey(CustomPk, models.CASCADE, null=True)
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class CustomPkTag(models.Model):
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id = models.CharField(max_length=20, primary_key=True)
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custom_pk = models.ManyToManyField(CustomPk)
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tag = models.CharField(max_length=20)
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# An inter-related setup with a model subclass that has a nullable
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# path to another model, and a return path from that model.
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class Celebrity(models.Model):
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name = models.CharField("Name", max_length=20)
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greatest_fan = models.ForeignKey("Fan", models.SET_NULL, null=True, unique=True)
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def __str__(self):
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return self.name
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class TvChef(Celebrity):
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pass
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class Fan(models.Model):
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fan_of = models.ForeignKey(Celebrity, models.CASCADE)
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# Multiple foreign keys
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class LeafA(models.Model):
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data = models.CharField(max_length=10)
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def __str__(self):
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return self.data
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class LeafB(models.Model):
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data = models.CharField(max_length=10)
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class Join(models.Model):
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a = models.ForeignKey(LeafA, models.CASCADE)
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b = models.ForeignKey(LeafB, models.CASCADE)
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class ReservedName(models.Model):
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name = models.CharField(max_length=20)
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order = models.IntegerField()
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def __str__(self):
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return self.name
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# A simpler shared-foreign-key setup that can expose some problems.
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class SharedConnection(models.Model):
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data = models.CharField(max_length=10)
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def __str__(self):
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return self.data
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class PointerA(models.Model):
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connection = models.ForeignKey(SharedConnection, models.CASCADE)
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class PointerB(models.Model):
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connection = models.ForeignKey(SharedConnection, models.CASCADE)
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# Multi-layer ordering
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class SingleObject(models.Model):
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name = models.CharField(max_length=10)
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class Meta:
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ordering = ['name']
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def __str__(self):
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return self.name
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class RelatedObject(models.Model):
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single = models.ForeignKey(SingleObject, models.SET_NULL, null=True)
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f = models.IntegerField(null=True)
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class Meta:
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ordering = ['single']
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class Plaything(models.Model):
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name = models.CharField(max_length=10)
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others = models.ForeignKey(RelatedObject, models.SET_NULL, null=True)
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class Meta:
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ordering = ['others']
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def __str__(self):
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return self.name
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class Article(models.Model):
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name = models.CharField(max_length=20)
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created = models.DateTimeField()
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def __str__(self):
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return self.name
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class Food(models.Model):
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name = models.CharField(max_length=20, unique=True)
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def __str__(self):
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return self.name
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class Eaten(models.Model):
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food = models.ForeignKey(Food, models.SET_NULL, to_field="name", null=True)
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meal = models.CharField(max_length=20)
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def __str__(self):
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return "%s at %s" % (self.food, self.meal)
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class Node(models.Model):
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num = models.IntegerField(unique=True)
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parent = models.ForeignKey("self", models.SET_NULL, to_field="num", null=True)
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def __str__(self):
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return "%s" % self.num
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# Bug #12252
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class ObjectA(models.Model):
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name = models.CharField(max_length=50)
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def __str__(self):
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return self.name
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def __iter__(self):
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# Ticket #23721
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assert False, 'type checking should happen without calling model __iter__'
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class ProxyObjectA(ObjectA):
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class Meta:
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proxy = True
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class ChildObjectA(ObjectA):
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pass
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class ObjectB(models.Model):
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name = models.CharField(max_length=50)
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objecta = models.ForeignKey(ObjectA, models.CASCADE)
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num = models.PositiveSmallIntegerField()
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def __str__(self):
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return self.name
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class ProxyObjectB(ObjectB):
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class Meta:
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proxy = True
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class ObjectC(models.Model):
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name = models.CharField(max_length=50)
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objecta = models.ForeignKey(ObjectA, models.SET_NULL, null=True)
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objectb = models.ForeignKey(ObjectB, models.SET_NULL, null=True)
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childobjecta = models.ForeignKey(ChildObjectA, models.SET_NULL, null=True, related_name='ca_pk')
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def __str__(self):
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return self.name
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class SimpleCategory(models.Model):
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name = models.CharField(max_length=15)
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def __str__(self):
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return self.name
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class SpecialCategory(SimpleCategory):
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special_name = models.CharField(max_length=15)
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def __str__(self):
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return self.name + " " + self.special_name
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class CategoryItem(models.Model):
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category = models.ForeignKey(SimpleCategory, models.CASCADE)
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def __str__(self):
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return "category item: " + str(self.category)
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class MixedCaseFieldCategoryItem(models.Model):
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CaTeGoRy = models.ForeignKey(SimpleCategory, models.CASCADE)
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class MixedCaseDbColumnCategoryItem(models.Model):
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category = models.ForeignKey(SimpleCategory, models.CASCADE, db_column='CaTeGoRy_Id')
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class OneToOneCategory(models.Model):
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new_name = models.CharField(max_length=15)
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category = models.OneToOneField(SimpleCategory, models.CASCADE)
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def __str__(self):
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return "one2one " + self.new_name
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class CategoryRelationship(models.Model):
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first = models.ForeignKey(SimpleCategory, models.CASCADE, related_name='first_rel')
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second = models.ForeignKey(SimpleCategory, models.CASCADE, related_name='second_rel')
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class CommonMixedCaseForeignKeys(models.Model):
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category = models.ForeignKey(CategoryItem, models.CASCADE)
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mixed_case_field_category = models.ForeignKey(MixedCaseFieldCategoryItem, models.CASCADE)
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mixed_case_db_column_category = models.ForeignKey(MixedCaseDbColumnCategoryItem, models.CASCADE)
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class NullableName(models.Model):
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name = models.CharField(max_length=20, null=True)
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class Meta:
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ordering = ['id']
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class ModelD(models.Model):
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name = models.TextField()
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class ModelC(models.Model):
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name = models.TextField()
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class ModelB(models.Model):
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name = models.TextField()
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c = models.ForeignKey(ModelC, models.CASCADE)
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class ModelA(models.Model):
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name = models.TextField()
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b = models.ForeignKey(ModelB, models.SET_NULL, null=True)
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d = models.ForeignKey(ModelD, models.CASCADE)
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class Job(models.Model):
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name = models.CharField(max_length=20, unique=True)
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def __str__(self):
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return self.name
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class JobResponsibilities(models.Model):
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job = models.ForeignKey(Job, models.CASCADE, to_field='name')
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responsibility = models.ForeignKey('Responsibility', models.CASCADE, to_field='description')
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class Responsibility(models.Model):
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description = models.CharField(max_length=20, unique=True)
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jobs = models.ManyToManyField(Job, through=JobResponsibilities,
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related_name='responsibilities')
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def __str__(self):
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return self.description
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# Models for disjunction join promotion low level testing.
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class FK1(models.Model):
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f1 = models.TextField()
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f2 = models.TextField()
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class FK2(models.Model):
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f1 = models.TextField()
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f2 = models.TextField()
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class FK3(models.Model):
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f1 = models.TextField()
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f2 = models.TextField()
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class BaseA(models.Model):
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a = models.ForeignKey(FK1, models.SET_NULL, null=True)
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b = models.ForeignKey(FK2, models.SET_NULL, null=True)
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c = models.ForeignKey(FK3, models.SET_NULL, null=True)
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class Identifier(models.Model):
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name = models.CharField(max_length=100)
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def __str__(self):
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return self.name
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class Program(models.Model):
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identifier = models.OneToOneField(Identifier, models.CASCADE)
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class Channel(models.Model):
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programs = models.ManyToManyField(Program)
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identifier = models.OneToOneField(Identifier, models.CASCADE)
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class Book(models.Model):
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title = models.TextField()
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chapter = models.ForeignKey('Chapter', models.CASCADE)
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class Chapter(models.Model):
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title = models.TextField()
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paragraph = models.ForeignKey('Paragraph', models.CASCADE)
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class Paragraph(models.Model):
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text = models.TextField()
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page = models.ManyToManyField('Page')
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class Page(models.Model):
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text = models.TextField()
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class MyObject(models.Model):
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parent = models.ForeignKey('self', models.SET_NULL, null=True, blank=True, related_name='children')
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data = models.CharField(max_length=100)
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created_at = models.DateTimeField(auto_now_add=True)
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# Models for #17600 regressions
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class Order(models.Model):
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id = models.IntegerField(primary_key=True)
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class Meta:
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ordering = ('pk',)
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def __str__(self):
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return '%s' % self.pk
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class OrderItem(models.Model):
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order = models.ForeignKey(Order, models.CASCADE, related_name='items')
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status = models.IntegerField()
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class Meta:
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ordering = ('pk',)
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def __str__(self):
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return '%s' % self.pk
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class BaseUser(models.Model):
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pass
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class Task(models.Model):
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title = models.CharField(max_length=10)
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owner = models.ForeignKey(BaseUser, models.CASCADE, related_name='owner')
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creator = models.ForeignKey(BaseUser, models.CASCADE, related_name='creator')
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def __str__(self):
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return self.title
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class Staff(models.Model):
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name = models.CharField(max_length=10)
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def __str__(self):
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return self.name
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class StaffUser(BaseUser):
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staff = models.OneToOneField(Staff, models.CASCADE, related_name='user')
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def __str__(self):
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return self.staff
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class Ticket21203Parent(models.Model):
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parentid = models.AutoField(primary_key=True)
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parent_bool = models.BooleanField(default=True)
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created = models.DateTimeField(auto_now=True)
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class Ticket21203Child(models.Model):
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childid = models.AutoField(primary_key=True)
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parent = models.ForeignKey(Ticket21203Parent, models.CASCADE)
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class Person(models.Model):
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name = models.CharField(max_length=128)
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class Company(models.Model):
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name = models.CharField(max_length=128)
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employees = models.ManyToManyField(Person, related_name='employers', through='Employment')
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def __str__(self):
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return self.name
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class Employment(models.Model):
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employer = models.ForeignKey(Company, models.CASCADE)
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employee = models.ForeignKey(Person, models.CASCADE)
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title = models.CharField(max_length=128)
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class School(models.Model):
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pass
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class Student(models.Model):
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school = models.ForeignKey(School, models.CASCADE)
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class Classroom(models.Model):
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name = models.CharField(max_length=20)
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has_blackboard = models.NullBooleanField()
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school = models.ForeignKey(School, models.CASCADE)
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students = models.ManyToManyField(Student, related_name='classroom')
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class Teacher(models.Model):
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schools = models.ManyToManyField(School)
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friends = models.ManyToManyField('self')
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class Ticket23605AParent(models.Model):
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pass
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class Ticket23605A(Ticket23605AParent):
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pass
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class Ticket23605B(models.Model):
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modela_fk = models.ForeignKey(Ticket23605A, models.CASCADE)
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modelc_fk = models.ForeignKey("Ticket23605C", models.CASCADE)
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field_b0 = models.IntegerField(null=True)
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field_b1 = models.BooleanField(default=False)
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class Ticket23605C(models.Model):
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field_c0 = models.FloatField()
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# db_table names have capital letters to ensure they are quoted in queries.
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class Individual(models.Model):
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alive = models.BooleanField()
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class Meta:
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db_table = 'Individual'
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class RelatedIndividual(models.Model):
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related = models.ForeignKey(Individual, models.CASCADE, related_name='related_individual')
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class Meta:
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db_table = 'RelatedIndividual'
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