mirror of https://github.com/django/django.git
1038 lines
38 KiB
Python
1038 lines
38 KiB
Python
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# -*- encoding: utf-8 -*-
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from __future__ import unicode_literals
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from django.core.checks import Error
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from django.db import models
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from django.test.utils import override_settings
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from django.test.testcases import skipIfDBFeature
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from .base import IsolatedModelsTestCase
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class RelativeFieldTests(IsolatedModelsTestCase):
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def test_valid_foreign_key_without_accessor(self):
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class Target(models.Model):
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# There would be a clash if Model.field installed an accessor.
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model = models.IntegerField()
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class Model(models.Model):
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field = models.ForeignKey(Target, related_name='+')
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field = Model._meta.get_field('field')
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errors = field.check()
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self.assertEqual(errors, [])
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def test_foreign_key_to_missing_model(self):
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# Model names are resolved when a model is being created, so we cannot
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# test relative fields in isolation and we need to attach them to a
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# model.
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class Model(models.Model):
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foreign_key = models.ForeignKey('Rel1')
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field = Model._meta.get_field('foreign_key')
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errors = field.check()
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expected = [
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Error(
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('The field has a relation with model Rel1, '
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'which has either not been installed or is abstract.'),
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hint=('Ensure that you did not misspell the model name and '
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'the model is not abstract. Does your INSTALLED_APPS '
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'setting contain the app where Rel1 is defined?'),
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obj=field,
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id='E030',
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),
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]
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self.assertEqual(errors, expected)
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def test_many_to_many_to_missing_model(self):
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class Model(models.Model):
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m2m = models.ManyToManyField("Rel2")
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field = Model._meta.get_field('m2m')
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errors = field.check(from_model=Model)
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expected = [
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Error(
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('The field has a relation with model Rel2, '
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'which has either not been installed or is abstract.'),
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hint=('Ensure that you did not misspell the model name and '
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'the model is not abstract. Does your INSTALLED_APPS '
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'setting contain the app where Rel2 is defined?'),
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obj=field,
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id='E030',
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),
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]
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self.assertEqual(errors, expected)
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def test_ambiguous_relationship_model(self):
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class Person(models.Model):
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pass
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class Group(models.Model):
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field = models.ManyToManyField('Person',
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through="AmbiguousRelationship", related_name='tertiary')
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class AmbiguousRelationship(models.Model):
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# Too much foreign keys to Person.
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first_person = models.ForeignKey(Person, related_name="first")
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second_person = models.ForeignKey(Person, related_name="second")
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second_model = models.ForeignKey(Group)
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field = Group._meta.get_field('field')
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errors = field.check(from_model=Group)
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expected = [
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Error(
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('The model is used as an intermediary model by '
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'invalid_models_tests.Group.field, but it has more than one '
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'foreign key to Person, '
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'which is ambiguous and is not permitted.'),
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hint=('If you want to create a recursive relationship, use '
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'ForeignKey("self", symmetrical=False, '
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'through="AmbiguousRelationship").'),
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obj=field,
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id='E027',
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),
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]
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self.assertEqual(errors, expected)
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def test_relationship_model_with_foreign_key_to_wrong_model(self):
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class WrongModel(models.Model):
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pass
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class Person(models.Model):
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pass
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class Group(models.Model):
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members = models.ManyToManyField('Person',
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through="InvalidRelationship")
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class InvalidRelationship(models.Model):
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person = models.ForeignKey(Person)
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wrong_foreign_key = models.ForeignKey(WrongModel)
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# The last foreign key should point to Group model.
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field = Group._meta.get_field('members')
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errors = field.check(from_model=Group)
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expected = [
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Error(
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('The model is used as an intermediary model by '
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'invalid_models_tests.Group.members, but it misses '
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'a foreign key to Group or Person.'),
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hint=None,
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obj=InvalidRelationship,
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id='E028',
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),
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]
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self.assertEqual(errors, expected)
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def test_relationship_model_missing_foreign_key(self):
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class Person(models.Model):
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pass
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class Group(models.Model):
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members = models.ManyToManyField('Person',
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through="InvalidRelationship")
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class InvalidRelationship(models.Model):
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group = models.ForeignKey(Group)
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# No foreign key to Person
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field = Group._meta.get_field('members')
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errors = field.check(from_model=Group)
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expected = [
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Error(
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('The model is used as an intermediary model by '
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'invalid_models_tests.Group.members, but it misses '
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'a foreign key to Group or Person.'),
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hint=None,
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obj=InvalidRelationship,
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id='E028',
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),
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]
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self.assertEqual(errors, expected)
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def test_missing_relationship_model(self):
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class Person(models.Model):
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pass
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class Group(models.Model):
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members = models.ManyToManyField('Person',
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through="MissingM2MModel")
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field = Group._meta.get_field('members')
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errors = field.check(from_model=Group)
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expected = [
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Error(
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('The field specifies a many-to-many relation through model '
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'MissingM2MModel, which has not been installed.'),
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hint=('Ensure that you did not misspell the model name and '
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'the model is not abstract. Does your INSTALLED_APPS '
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'setting contain the app where MissingM2MModel is defined?'),
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obj=field,
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id='E023',
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),
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]
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self.assertEqual(errors, expected)
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def test_symmetrical_self_referential_field(self):
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class Person(models.Model):
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# Implicit symmetrical=False.
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friends = models.ManyToManyField('self', through="Relationship")
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class Relationship(models.Model):
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first = models.ForeignKey(Person, related_name="rel_from_set")
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second = models.ForeignKey(Person, related_name="rel_to_set")
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field = Person._meta.get_field('friends')
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errors = field.check(from_model=Person)
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expected = [
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Error(
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'Many-to-many fields with intermediate tables must not be symmetrical.',
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hint=None,
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obj=field,
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id='E024',
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),
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]
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self.assertEqual(errors, expected)
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def test_too_many_foreign_keys_in_self_referential_model(self):
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class Person(models.Model):
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friends = models.ManyToManyField('self',
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through="InvalidRelationship", symmetrical=False)
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class InvalidRelationship(models.Model):
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first = models.ForeignKey(Person, related_name="rel_from_set_2")
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second = models.ForeignKey(Person, related_name="rel_to_set_2")
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third = models.ForeignKey(Person, related_name="too_many_by_far")
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field = Person._meta.get_field('friends')
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errors = field.check(from_model=Person)
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expected = [
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Error(
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('The model is used as an intermediary model by '
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'invalid_models_tests.Person.friends, but it has more than two '
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'foreign keys to Person, which is ambiguous and '
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'is not permitted.'),
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hint=None,
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obj=InvalidRelationship,
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id='E025',
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),
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]
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self.assertEqual(errors, expected)
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def test_symmetric_self_reference_with_intermediate_table(self):
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class Person(models.Model):
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# Explicit symmetrical=True.
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friends = models.ManyToManyField('self',
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through="Relationship", symmetrical=True)
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class Relationship(models.Model):
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first = models.ForeignKey(Person, related_name="rel_from_set")
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second = models.ForeignKey(Person, related_name="rel_to_set")
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field = Person._meta.get_field('friends')
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errors = field.check(from_model=Person)
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expected = [
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Error(
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'Many-to-many fields with intermediate tables must not be symmetrical.',
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hint=None,
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obj=field,
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id='E024',
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),
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]
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self.assertEqual(errors, expected)
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def test_foreign_key_to_abstract_model(self):
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class Model(models.Model):
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foreign_key = models.ForeignKey('AbstractModel')
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class AbstractModel(models.Model):
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class Meta:
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abstract = True
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field = Model._meta.get_field('foreign_key')
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errors = field.check()
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expected = [
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Error(
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('The field has a relation with model AbstractModel, '
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'which has either not been installed or is abstract.'),
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hint=('Ensure that you did not misspell the model name and '
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'the model is not abstract. Does your INSTALLED_APPS '
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'setting contain the app where AbstractModel is defined?'),
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obj=field,
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id='E030',
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),
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]
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self.assertEqual(errors, expected)
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def test_m2m_to_abstract_model(self):
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class AbstractModel(models.Model):
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class Meta:
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abstract = True
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class Model(models.Model):
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m2m = models.ManyToManyField('AbstractModel')
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field = Model._meta.get_field('m2m')
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errors = field.check(from_model=Model)
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expected = [
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Error(
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('The field has a relation with model AbstractModel, '
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'which has either not been installed or is abstract.'),
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hint=('Ensure that you did not misspell the model name and '
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'the model is not abstract. Does your INSTALLED_APPS '
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'setting contain the app where AbstractModel is defined?'),
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obj=field,
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id='E030',
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),
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]
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self.assertEqual(errors, expected)
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def test_unique_m2m(self):
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class Person(models.Model):
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name = models.CharField(max_length=5)
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class Group(models.Model):
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members = models.ManyToManyField('Person', unique=True)
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field = Group._meta.get_field('members')
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errors = field.check(from_model=Group)
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expected = [
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Error(
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'ManyToManyFields must not be unique.',
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hint=None,
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obj=field,
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id='E022',
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),
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]
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self.assertEqual(errors, expected)
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def test_foreign_key_to_non_unique_field(self):
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class Target(models.Model):
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bad = models.IntegerField() # No unique=True
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class Model(models.Model):
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foreign_key = models.ForeignKey('Target', to_field='bad')
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field = Model._meta.get_field('foreign_key')
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errors = field.check()
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expected = [
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Error(
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'Target.bad must have unique=True because it is referenced by a foreign key.',
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hint=None,
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obj=field,
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id='E019',
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),
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]
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self.assertEqual(errors, expected)
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def test_foreign_key_to_non_unique_field_under_explicit_model(self):
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class Target(models.Model):
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bad = models.IntegerField()
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class Model(models.Model):
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field = models.ForeignKey(Target, to_field='bad')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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'Target.bad must have unique=True because it is referenced by a foreign key.',
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hint=None,
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obj=field,
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id='E019',
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),
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]
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self.assertEqual(errors, expected)
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def test_foreign_object_to_non_unique_fields(self):
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class Person(models.Model):
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# Note that both fields are not unique.
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country_id = models.IntegerField()
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city_id = models.IntegerField()
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class MMembership(models.Model):
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person_country_id = models.IntegerField()
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person_city_id = models.IntegerField()
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person = models.ForeignObject(Person,
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from_fields=['person_country_id', 'person_city_id'],
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to_fields=['country_id', 'city_id'])
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field = MMembership._meta.get_field('person')
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errors = field.check()
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expected = [
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Error(
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('No unique=True constraint on field combination '
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'"country_id,city_id" under model Person.'),
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hint=('Set unique=True argument on any of the fields '
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'"country_id,city_id" under model Person.'),
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obj=field,
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id='E018',
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)
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]
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self.assertEqual(errors, expected)
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def test_on_delete_set_null_on_non_nullable_field(self):
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class Person(models.Model):
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pass
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class Model(models.Model):
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foreign_key = models.ForeignKey('Person',
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on_delete=models.SET_NULL)
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field = Model._meta.get_field('foreign_key')
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errors = field.check()
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expected = [
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Error(
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|
|
'The field specifies on_delete=SET_NULL, but cannot be null.',
|
||
|
|
hint='Set null=True argument on the field.',
|
||
|
|
obj=field,
|
||
|
|
id='E020',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_on_delete_set_default_without_default_value(self):
|
||
|
|
class Person(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
foreign_key = models.ForeignKey('Person',
|
||
|
|
on_delete=models.SET_DEFAULT)
|
||
|
|
|
||
|
|
field = Model._meta.get_field('foreign_key')
|
||
|
|
errors = field.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'The field specifies on_delete=SET_DEFAULT, but has no default value.',
|
||
|
|
hint=None,
|
||
|
|
obj=field,
|
||
|
|
id='E021',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
@skipIfDBFeature('interprets_empty_strings_as_nulls')
|
||
|
|
def test_nullable_primary_key(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
field = models.IntegerField(primary_key=True, null=True)
|
||
|
|
|
||
|
|
field = Model._meta.get_field('field')
|
||
|
|
errors = field.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Primary keys must not have null=True.',
|
||
|
|
hint='Set null=False on the field or remove primary_key=True argument.',
|
||
|
|
obj=field,
|
||
|
|
id='E036',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_not_swapped_model(self):
|
||
|
|
class SwappableModel(models.Model):
|
||
|
|
# A model that can be, but isn't swapped out. References to this
|
||
|
|
# model should *not* raise any validation error.
|
||
|
|
class Meta:
|
||
|
|
swappable = 'TEST_SWAPPABLE_MODEL'
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
explicit_fk = models.ForeignKey(SwappableModel,
|
||
|
|
related_name='explicit_fk')
|
||
|
|
implicit_fk = models.ForeignKey('invalid_models_tests.SwappableModel',
|
||
|
|
related_name='implicit_fk')
|
||
|
|
explicit_m2m = models.ManyToManyField(SwappableModel,
|
||
|
|
related_name='explicit_m2m')
|
||
|
|
implicit_m2m = models.ManyToManyField(
|
||
|
|
'invalid_models_tests.SwappableModel',
|
||
|
|
related_name='implicit_m2m')
|
||
|
|
|
||
|
|
explicit_fk = Model._meta.get_field('explicit_fk')
|
||
|
|
self.assertEqual(explicit_fk.check(), [])
|
||
|
|
|
||
|
|
implicit_fk = Model._meta.get_field('implicit_fk')
|
||
|
|
self.assertEqual(implicit_fk.check(), [])
|
||
|
|
|
||
|
|
explicit_m2m = Model._meta.get_field('explicit_m2m')
|
||
|
|
self.assertEqual(explicit_m2m.check(from_model=Model), [])
|
||
|
|
|
||
|
|
implicit_m2m = Model._meta.get_field('implicit_m2m')
|
||
|
|
self.assertEqual(implicit_m2m.check(from_model=Model), [])
|
||
|
|
|
||
|
|
@override_settings(TEST_SWAPPED_MODEL='invalid_models_tests.Replacement')
|
||
|
|
def test_referencing_to_swapped_model(self):
|
||
|
|
class Replacement(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class SwappedModel(models.Model):
|
||
|
|
class Meta:
|
||
|
|
swappable = 'TEST_SWAPPED_MODEL'
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
explicit_fk = models.ForeignKey(SwappedModel,
|
||
|
|
related_name='explicit_fk')
|
||
|
|
implicit_fk = models.ForeignKey('invalid_models_tests.SwappedModel',
|
||
|
|
related_name='implicit_fk')
|
||
|
|
explicit_m2m = models.ManyToManyField(SwappedModel,
|
||
|
|
related_name='explicit_m2m')
|
||
|
|
implicit_m2m = models.ManyToManyField(
|
||
|
|
'invalid_models_tests.SwappedModel',
|
||
|
|
related_name='implicit_m2m')
|
||
|
|
|
||
|
|
fields = [
|
||
|
|
Model._meta.get_field('explicit_fk'),
|
||
|
|
Model._meta.get_field('implicit_fk'),
|
||
|
|
Model._meta.get_field('explicit_m2m'),
|
||
|
|
Model._meta.get_field('implicit_m2m'),
|
||
|
|
]
|
||
|
|
|
||
|
|
expected_error = Error(
|
||
|
|
('The field defines a relation with the model '
|
||
|
|
'invalid_models_tests.SwappedModel, which has been swapped out.'),
|
||
|
|
hint='Update the relation to point at settings.TEST_SWAPPED_MODEL',
|
||
|
|
id='E029',
|
||
|
|
)
|
||
|
|
|
||
|
|
for field in fields:
|
||
|
|
expected_error.obj = field
|
||
|
|
errors = field.check(from_model=Model)
|
||
|
|
self.assertEqual(errors, [expected_error])
|
||
|
|
|
||
|
|
|
||
|
|
class AccessorClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
def test_fk_to_integer(self):
|
||
|
|
self._test_accessor_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ForeignKey('Target'))
|
||
|
|
|
||
|
|
def test_fk_to_fk(self):
|
||
|
|
self._test_accessor_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ForeignKey('Target'))
|
||
|
|
|
||
|
|
def test_fk_to_m2m(self):
|
||
|
|
self._test_accessor_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ForeignKey('Target'))
|
||
|
|
|
||
|
|
def test_m2m_to_integer(self):
|
||
|
|
self._test_accessor_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ManyToManyField('Target'))
|
||
|
|
|
||
|
|
def test_m2m_to_fk(self):
|
||
|
|
self._test_accessor_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ManyToManyField('Target'))
|
||
|
|
|
||
|
|
def test_m2m_to_m2m(self):
|
||
|
|
self._test_accessor_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ManyToManyField('Target'))
|
||
|
|
|
||
|
|
def _test_accessor_clash(self, target, relative):
|
||
|
|
class Another(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class Target(models.Model):
|
||
|
|
model_set = target
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
rel = relative
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.rel clashes with field Target.model_set.',
|
||
|
|
hint=('Rename field Target.model_set or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.rel.'),
|
||
|
|
obj=Model._meta.get_field('rel'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_clash_between_accessors(self):
|
||
|
|
class Target(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
foreign = models.ForeignKey(Target)
|
||
|
|
m2m = models.ManyToManyField(Target)
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.foreign and Model.m2m.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.foreign or Model.m2m.'),
|
||
|
|
obj=Model._meta.get_field('foreign'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.m2m and Model.foreign.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.m2m or Model.foreign.'),
|
||
|
|
obj=Model._meta.get_field('m2m'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
|
||
|
|
class ReverseQueryNameClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
def test_fk_to_integer(self):
|
||
|
|
self._test_reverse_query_name_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ForeignKey('Target'))
|
||
|
|
|
||
|
|
def test_fk_to_fk(self):
|
||
|
|
self._test_reverse_query_name_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ForeignKey('Target'))
|
||
|
|
|
||
|
|
def test_fk_to_m2m(self):
|
||
|
|
self._test_reverse_query_name_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ForeignKey('Target'))
|
||
|
|
|
||
|
|
def test_m2m_to_integer(self):
|
||
|
|
self._test_reverse_query_name_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ManyToManyField('Target'))
|
||
|
|
|
||
|
|
def test_m2m_to_fk(self):
|
||
|
|
self._test_reverse_query_name_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ManyToManyField('Target'))
|
||
|
|
|
||
|
|
def test_m2m_to_m2m(self):
|
||
|
|
self._test_reverse_query_name_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ManyToManyField('Target'))
|
||
|
|
|
||
|
|
def _test_reverse_query_name_clash(self, target, relative):
|
||
|
|
class Another(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class Target(models.Model):
|
||
|
|
model = target
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
rel = relative
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.rel clashes with field Target.model.',
|
||
|
|
hint=('Rename field Target.model or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.rel.'),
|
||
|
|
obj=Model._meta.get_field('rel'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
|
||
|
|
class ExplicitRelatedNameClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
def test_fk_to_integer(self):
|
||
|
|
self._test_explicit_related_name_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ForeignKey('Target', related_name='clash'))
|
||
|
|
|
||
|
|
def test_fk_to_fk(self):
|
||
|
|
self._test_explicit_related_name_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ForeignKey('Target', related_name='clash'))
|
||
|
|
|
||
|
|
def test_fk_to_m2m(self):
|
||
|
|
self._test_explicit_related_name_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ForeignKey('Target', related_name='clash'))
|
||
|
|
|
||
|
|
def test_m2m_to_integer(self):
|
||
|
|
self._test_explicit_related_name_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ManyToManyField('Target', related_name='clash'))
|
||
|
|
|
||
|
|
def test_m2m_to_fk(self):
|
||
|
|
self._test_explicit_related_name_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ManyToManyField('Target', related_name='clash'))
|
||
|
|
|
||
|
|
def test_m2m_to_m2m(self):
|
||
|
|
self._test_explicit_related_name_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ManyToManyField('Target', related_name='clash'))
|
||
|
|
|
||
|
|
def _test_explicit_related_name_clash(self, target, relative):
|
||
|
|
class Another(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class Target(models.Model):
|
||
|
|
clash = target
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
rel = relative
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.rel clashes with field Target.clash.',
|
||
|
|
hint=('Rename field Target.clash or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.rel.'),
|
||
|
|
obj=Model._meta.get_field('rel'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.rel clashes with field Target.clash.',
|
||
|
|
hint=('Rename field Target.clash or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.rel.'),
|
||
|
|
obj=Model._meta.get_field('rel'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
|
||
|
|
class ExplicitRelatedQueryNameClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
def test_fk_to_integer(self):
|
||
|
|
self._test_explicit_related_query_name_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ForeignKey('Target',
|
||
|
|
related_query_name='clash'))
|
||
|
|
|
||
|
|
def test_fk_to_fk(self):
|
||
|
|
self._test_explicit_related_query_name_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ForeignKey('Target',
|
||
|
|
related_query_name='clash'))
|
||
|
|
|
||
|
|
def test_fk_to_m2m(self):
|
||
|
|
self._test_explicit_related_query_name_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ForeignKey('Target',
|
||
|
|
related_query_name='clash'))
|
||
|
|
|
||
|
|
def test_m2m_to_integer(self):
|
||
|
|
self._test_explicit_related_query_name_clash(
|
||
|
|
target=models.IntegerField(),
|
||
|
|
relative=models.ManyToManyField('Target',
|
||
|
|
related_query_name='clash'))
|
||
|
|
|
||
|
|
def test_m2m_to_fk(self):
|
||
|
|
self._test_explicit_related_query_name_clash(
|
||
|
|
target=models.ForeignKey('Another'),
|
||
|
|
relative=models.ManyToManyField('Target',
|
||
|
|
related_query_name='clash'))
|
||
|
|
|
||
|
|
def test_m2m_to_m2m(self):
|
||
|
|
self._test_explicit_related_query_name_clash(
|
||
|
|
target=models.ManyToManyField('Another'),
|
||
|
|
relative=models.ManyToManyField('Target',
|
||
|
|
related_query_name='clash'))
|
||
|
|
|
||
|
|
def _test_explicit_related_query_name_clash(self, target, relative):
|
||
|
|
class Another(models.Model):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class Target(models.Model):
|
||
|
|
clash = target
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
rel = relative
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.rel clashes with field Target.clash.',
|
||
|
|
hint=('Rename field Target.clash or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.rel.'),
|
||
|
|
obj=Model._meta.get_field('rel'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
|
||
|
|
class SelfReferentialM2MClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
def test_clash_between_accessors(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
first_m2m = models.ManyToManyField('self', symmetrical=False)
|
||
|
|
second_m2m = models.ManyToManyField('self', symmetrical=False)
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.first_m2m and Model.second_m2m.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.first_m2m or Model.second_m2m.'),
|
||
|
|
obj=Model._meta.get_field('first_m2m'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.second_m2m and Model.first_m2m.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.second_m2m or Model.first_m2m.'),
|
||
|
|
obj=Model._meta.get_field('second_m2m'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_accessor_clash(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
model_set = models.ManyToManyField("self", symmetrical=False)
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.model_set clashes with field Model.model_set.',
|
||
|
|
hint=('Rename field Model.model_set or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.model_set.'),
|
||
|
|
obj=Model._meta.get_field('model_set'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_reverse_query_name_clash(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
model = models.ManyToManyField("self", symmetrical=False)
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.model clashes with field Model.model.',
|
||
|
|
hint=('Rename field Model.model or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.model.'),
|
||
|
|
obj=Model._meta.get_field('model'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_clash_under_explicit_related_name(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
clash = models.IntegerField()
|
||
|
|
m2m = models.ManyToManyField("self",
|
||
|
|
symmetrical=False, related_name='clash')
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.m2m clashes with field Model.clash.',
|
||
|
|
hint=('Rename field Model.clash or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.m2m.'),
|
||
|
|
obj=Model._meta.get_field('m2m'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.m2m clashes with field Model.clash.',
|
||
|
|
hint=('Rename field Model.clash or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.m2m.'),
|
||
|
|
obj=Model._meta.get_field('m2m'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_valid_model(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
first = models.ManyToManyField("self",
|
||
|
|
symmetrical=False, related_name='first_accessor')
|
||
|
|
second = models.ManyToManyField("self",
|
||
|
|
symmetrical=False, related_name='second_accessor')
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
self.assertEqual(errors, [])
|
||
|
|
|
||
|
|
|
||
|
|
class SelfReferentialFKClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
def test_accessor_clash(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
model_set = models.ForeignKey("Model")
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.model_set clashes with field Model.model_set.',
|
||
|
|
hint=('Rename field Model.model_set or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.model_set.'),
|
||
|
|
obj=Model._meta.get_field('model_set'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_reverse_query_name_clash(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
model = models.ForeignKey("Model")
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.model clashes with field Model.model.',
|
||
|
|
hint=('Rename field Model.model or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.model.'),
|
||
|
|
obj=Model._meta.get_field('model'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
def test_clash_under_explicit_related_name(self):
|
||
|
|
class Model(models.Model):
|
||
|
|
clash = models.CharField(max_length=10)
|
||
|
|
foreign = models.ForeignKey("Model", related_name='clash')
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.foreign clashes with field Model.clash.',
|
||
|
|
hint=('Rename field Model.clash or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.foreign.'),
|
||
|
|
obj=Model._meta.get_field('foreign'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.foreign clashes with field Model.clash.',
|
||
|
|
hint=('Rename field Model.clash or add/change '
|
||
|
|
'a related_name argument to the definition '
|
||
|
|
'for field Model.foreign.'),
|
||
|
|
obj=Model._meta.get_field('foreign'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|
||
|
|
|
||
|
|
|
||
|
|
class ComplexClashTests(IsolatedModelsTestCase):
|
||
|
|
|
||
|
|
# New tests should not be included here, because this is a single,
|
||
|
|
# self-contained sanity check, not a test of everything.
|
||
|
|
def test_complex_clash(self):
|
||
|
|
class Target(models.Model):
|
||
|
|
tgt_safe = models.CharField(max_length=10)
|
||
|
|
clash = models.CharField(max_length=10)
|
||
|
|
model = models.CharField(max_length=10)
|
||
|
|
|
||
|
|
clash1_set = models.CharField(max_length=10)
|
||
|
|
|
||
|
|
class Model(models.Model):
|
||
|
|
src_safe = models.CharField(max_length=10)
|
||
|
|
|
||
|
|
foreign_1 = models.ForeignKey(Target, related_name='id')
|
||
|
|
foreign_2 = models.ForeignKey(Target, related_name='src_safe')
|
||
|
|
|
||
|
|
m2m_1 = models.ManyToManyField(Target, related_name='id')
|
||
|
|
m2m_2 = models.ManyToManyField(Target, related_name='src_safe')
|
||
|
|
|
||
|
|
errors = Model.check()
|
||
|
|
expected = [
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.foreign_1 clashes with field Target.id.',
|
||
|
|
hint=('Rename field Target.id or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.foreign_1.'),
|
||
|
|
obj=Model._meta.get_field('foreign_1'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.foreign_1 clashes with field Target.id.',
|
||
|
|
hint=('Rename field Target.id or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.foreign_1.'),
|
||
|
|
obj=Model._meta.get_field('foreign_1'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.foreign_1 and Model.m2m_1.',
|
||
|
|
hint=('Add or change a related_name argument to '
|
||
|
|
'the definition for Model.foreign_1 or Model.m2m_1.'),
|
||
|
|
obj=Model._meta.get_field('foreign_1'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between reverse query names for Model.foreign_1 and Model.m2m_1.',
|
||
|
|
hint=('Add or change a related_name argument to '
|
||
|
|
'the definition for Model.foreign_1 or Model.m2m_1.'),
|
||
|
|
obj=Model._meta.get_field('foreign_1'),
|
||
|
|
id='E017',
|
||
|
|
),
|
||
|
|
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.foreign_2 and Model.m2m_2.',
|
||
|
|
hint=('Add or change a related_name argument '
|
||
|
|
'to the definition for Model.foreign_2 or Model.m2m_2.'),
|
||
|
|
obj=Model._meta.get_field('foreign_2'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between reverse query names for Model.foreign_2 and Model.m2m_2.',
|
||
|
|
hint=('Add or change a related_name argument to '
|
||
|
|
'the definition for Model.foreign_2 or Model.m2m_2.'),
|
||
|
|
obj=Model._meta.get_field('foreign_2'),
|
||
|
|
id='E017',
|
||
|
|
),
|
||
|
|
|
||
|
|
Error(
|
||
|
|
'Accessor for field Model.m2m_1 clashes with field Target.id.',
|
||
|
|
hint=('Rename field Target.id or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.m2m_1.'),
|
||
|
|
obj=Model._meta.get_field('m2m_1'),
|
||
|
|
id='E014',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Reverse query name for field Model.m2m_1 clashes with field Target.id.',
|
||
|
|
hint=('Rename field Target.id or add/change a related_name '
|
||
|
|
'argument to the definition for field Model.m2m_1.'),
|
||
|
|
obj=Model._meta.get_field('m2m_1'),
|
||
|
|
id='E015',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.m2m_1 and Model.foreign_1.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.m2m_1 or Model.foreign_1.'),
|
||
|
|
obj=Model._meta.get_field('m2m_1'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between reverse query names for Model.m2m_1 and Model.foreign_1.',
|
||
|
|
hint=('Add or change a related_name argument to '
|
||
|
|
'the definition for Model.m2m_1 or Model.foreign_1.'),
|
||
|
|
obj=Model._meta.get_field('m2m_1'),
|
||
|
|
id='E017',
|
||
|
|
),
|
||
|
|
|
||
|
|
Error(
|
||
|
|
'Clash between accessors for Model.m2m_2 and Model.foreign_2.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.m2m_2 or Model.foreign_2.'),
|
||
|
|
obj=Model._meta.get_field('m2m_2'),
|
||
|
|
id='E016',
|
||
|
|
),
|
||
|
|
Error(
|
||
|
|
'Clash between reverse query names for Model.m2m_2 and Model.foreign_2.',
|
||
|
|
hint=('Add or change a related_name argument to the definition '
|
||
|
|
'for Model.m2m_2 or Model.foreign_2.'),
|
||
|
|
obj=Model._meta.get_field('m2m_2'),
|
||
|
|
id='E017',
|
||
|
|
),
|
||
|
|
]
|
||
|
|
self.assertEqual(errors, expected)
|