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a301061f88
An explicit `__exact` lookup in the related managers filters
was interpreted as a reference to a foreign `exact` field.
Thanks to Trac alias zhiyajun11 for the report, Josh for the investigation,
Loïc for the test name and Tim for the review.
Backport of eb4cdfbdd6 from master
150 lines
3.4 KiB
Python
150 lines
3.4 KiB
Python
"""
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Various edge-cases for model managers.
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"""
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from django.contrib.contenttypes.fields import (
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GenericForeignKey, GenericRelation
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)
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from django.contrib.contenttypes.models import ContentType
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from django.db import models
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from django.utils.encoding import python_2_unicode_compatible, force_text
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class OnlyFred(models.Manager):
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def get_queryset(self):
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return super(OnlyFred, self).get_queryset().filter(name='fred')
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class OnlyBarney(models.Manager):
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def get_queryset(self):
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return super(OnlyBarney, self).get_queryset().filter(name='barney')
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class Value42(models.Manager):
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def get_queryset(self):
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return super(Value42, self).get_queryset().filter(value=42)
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class AbstractBase1(models.Model):
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name = models.CharField(max_length=50)
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class Meta:
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abstract = True
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# Custom managers
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manager1 = OnlyFred()
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manager2 = OnlyBarney()
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objects = models.Manager()
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class AbstractBase2(models.Model):
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value = models.IntegerField()
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class Meta:
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abstract = True
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# Custom manager
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restricted = Value42()
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# No custom manager on this class to make sure the default case doesn't break.
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class AbstractBase3(models.Model):
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comment = models.CharField(max_length=50)
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class Meta:
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abstract = True
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@python_2_unicode_compatible
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class Parent(models.Model):
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name = models.CharField(max_length=50)
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manager = OnlyFred()
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def __str__(self):
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return self.name
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# Managers from base classes are inherited and, if no manager is specified
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# *and* the parent has a manager specified, the first one (in the MRO) will
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# become the default.
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@python_2_unicode_compatible
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class Child1(AbstractBase1):
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data = models.CharField(max_length=25)
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def __str__(self):
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return self.data
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@python_2_unicode_compatible
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class Child2(AbstractBase1, AbstractBase2):
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data = models.CharField(max_length=25)
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def __str__(self):
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return self.data
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@python_2_unicode_compatible
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class Child3(AbstractBase1, AbstractBase3):
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data = models.CharField(max_length=25)
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def __str__(self):
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return self.data
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@python_2_unicode_compatible
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class Child4(AbstractBase1):
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data = models.CharField(max_length=25)
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# Should be the default manager, although the parent managers are
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# inherited.
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default = models.Manager()
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def __str__(self):
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return self.data
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@python_2_unicode_compatible
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class Child5(AbstractBase3):
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name = models.CharField(max_length=25)
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default = OnlyFred()
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objects = models.Manager()
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def __str__(self):
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return self.name
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# Will inherit managers from AbstractBase1, but not Child4.
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class Child6(Child4):
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value = models.IntegerField()
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# Will not inherit default manager from parent.
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class Child7(Parent):
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pass
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# RelatedManagers
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@python_2_unicode_compatible
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class RelatedModel(models.Model):
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test_gfk = GenericRelation('RelationModel', content_type_field='gfk_ctype', object_id_field='gfk_id')
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exact = models.NullBooleanField()
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def __str__(self):
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return force_text(self.pk)
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@python_2_unicode_compatible
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class RelationModel(models.Model):
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fk = models.ForeignKey(RelatedModel, related_name='test_fk')
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m2m = models.ManyToManyField(RelatedModel, related_name='test_m2m')
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gfk_ctype = models.ForeignKey(ContentType, null=True)
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gfk_id = models.IntegerField(null=True)
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gfk = GenericForeignKey(ct_field='gfk_ctype', fk_field='gfk_id')
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def __str__(self):
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return force_text(self.pk)
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