django-rest-framework/tests/test_relations_hyperlink.py

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from __future__ import unicode_literals
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from django.conf.urls import patterns, url
from django.test import TestCase
from rest_framework import serializers
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from rest_framework.test import APIRequestFactory
from tests.models import (
BlogPost,
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ManyToManyTarget, ManyToManySource, ForeignKeyTarget, ForeignKeySource,
NullableForeignKeySource, OneToOneTarget, NullableOneToOneSource
)
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factory = APIRequestFactory()
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request = factory.get('/') # Just to ensure we have a request in the serializer context
def dummy_view(request, pk):
pass
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urlpatterns = patterns(
'',
url(r'^dummyurl/(?P<pk>[0-9]+)/$', dummy_view, name='dummy-url'),
url(r'^manytomanysource/(?P<pk>[0-9]+)/$', dummy_view, name='manytomanysource-detail'),
url(r'^manytomanytarget/(?P<pk>[0-9]+)/$', dummy_view, name='manytomanytarget-detail'),
url(r'^foreignkeysource/(?P<pk>[0-9]+)/$', dummy_view, name='foreignkeysource-detail'),
url(r'^foreignkeytarget/(?P<pk>[0-9]+)/$', dummy_view, name='foreignkeytarget-detail'),
url(r'^nullableforeignkeysource/(?P<pk>[0-9]+)/$', dummy_view, name='nullableforeignkeysource-detail'),
url(r'^onetoonetarget/(?P<pk>[0-9]+)/$', dummy_view, name='onetoonetarget-detail'),
url(r'^nullableonetoonesource/(?P<pk>[0-9]+)/$', dummy_view, name='nullableonetoonesource-detail'),
)
# ManyToMany
class ManyToManyTargetSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = ManyToManyTarget
fields = ('url', 'name', 'sources')
class ManyToManySourceSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = ManyToManySource
fields = ('url', 'name', 'targets')
# ForeignKey
class ForeignKeyTargetSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = ForeignKeyTarget
fields = ('url', 'name', 'sources')
class ForeignKeySourceSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = ForeignKeySource
fields = ('url', 'name', 'target')
# Nullable ForeignKey
class NullableForeignKeySourceSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = NullableForeignKeySource
fields = ('url', 'name', 'target')
# Nullable OneToOne
class NullableOneToOneTargetSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = OneToOneTarget
fields = ('url', 'name', 'nullable_source')
# TODO: Add test that .data cannot be accessed prior to .is_valid
class HyperlinkedManyToManyTests(TestCase):
urls = 'tests.test_relations_hyperlink'
def setUp(self):
for idx in range(1, 4):
target = ManyToManyTarget(name='target-%d' % idx)
target.save()
source = ManyToManySource(name='source-%d' % idx)
source.save()
for target in ManyToManyTarget.objects.all():
source.targets.add(target)
def test_many_to_many_retrieve(self):
queryset = ManyToManySource.objects.all()
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serializer = ManyToManySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/manytomanysource/1/', 'name': 'source-1', 'targets': ['http://testserver/manytomanytarget/1/']},
{'url': 'http://testserver/manytomanysource/2/', 'name': 'source-2', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/']},
{'url': 'http://testserver/manytomanysource/3/', 'name': 'source-3', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/', 'http://testserver/manytomanytarget/3/']}
]
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self.assertEqual(serializer.data, expected)
def test_reverse_many_to_many_retrieve(self):
queryset = ManyToManyTarget.objects.all()
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serializer = ManyToManyTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/manytomanytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/manytomanysource/1/', 'http://testserver/manytomanysource/2/', 'http://testserver/manytomanysource/3/']},
{'url': 'http://testserver/manytomanytarget/2/', 'name': 'target-2', 'sources': ['http://testserver/manytomanysource/2/', 'http://testserver/manytomanysource/3/']},
{'url': 'http://testserver/manytomanytarget/3/', 'name': 'target-3', 'sources': ['http://testserver/manytomanysource/3/']}
]
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self.assertEqual(serializer.data, expected)
def test_many_to_many_update(self):
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data = {'url': 'http://testserver/manytomanysource/1/', 'name': 'source-1', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/', 'http://testserver/manytomanytarget/3/']}
instance = ManyToManySource.objects.get(pk=1)
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serializer = ManyToManySourceSerializer(instance, data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
serializer.save()
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self.assertEqual(serializer.data, data)
# Ensure source 1 is updated, and everything else is as expected
queryset = ManyToManySource.objects.all()
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serializer = ManyToManySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/manytomanysource/1/', 'name': 'source-1', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/', 'http://testserver/manytomanytarget/3/']},
{'url': 'http://testserver/manytomanysource/2/', 'name': 'source-2', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/']},
{'url': 'http://testserver/manytomanysource/3/', 'name': 'source-3', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/', 'http://testserver/manytomanytarget/3/']}
]
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self.assertEqual(serializer.data, expected)
def test_reverse_many_to_many_update(self):
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data = {'url': 'http://testserver/manytomanytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/manytomanysource/1/']}
instance = ManyToManyTarget.objects.get(pk=1)
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serializer = ManyToManyTargetSerializer(instance, data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
serializer.save()
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self.assertEqual(serializer.data, data)
# Ensure target 1 is updated, and everything else is as expected
queryset = ManyToManyTarget.objects.all()
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serializer = ManyToManyTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/manytomanytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/manytomanysource/1/']},
{'url': 'http://testserver/manytomanytarget/2/', 'name': 'target-2', 'sources': ['http://testserver/manytomanysource/2/', 'http://testserver/manytomanysource/3/']},
{'url': 'http://testserver/manytomanytarget/3/', 'name': 'target-3', 'sources': ['http://testserver/manytomanysource/3/']}
]
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self.assertEqual(serializer.data, expected)
def test_many_to_many_create(self):
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data = {'url': 'http://testserver/manytomanysource/4/', 'name': 'source-4', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/3/']}
serializer = ManyToManySourceSerializer(data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'source-4')
# Ensure source 4 is added, and everything else is as expected
queryset = ManyToManySource.objects.all()
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serializer = ManyToManySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/manytomanysource/1/', 'name': 'source-1', 'targets': ['http://testserver/manytomanytarget/1/']},
{'url': 'http://testserver/manytomanysource/2/', 'name': 'source-2', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/']},
{'url': 'http://testserver/manytomanysource/3/', 'name': 'source-3', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/2/', 'http://testserver/manytomanytarget/3/']},
{'url': 'http://testserver/manytomanysource/4/', 'name': 'source-4', 'targets': ['http://testserver/manytomanytarget/1/', 'http://testserver/manytomanytarget/3/']}
]
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self.assertEqual(serializer.data, expected)
def test_reverse_many_to_many_create(self):
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data = {'url': 'http://testserver/manytomanytarget/4/', 'name': 'target-4', 'sources': ['http://testserver/manytomanysource/1/', 'http://testserver/manytomanysource/3/']}
serializer = ManyToManyTargetSerializer(data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'target-4')
# Ensure target 4 is added, and everything else is as expected
queryset = ManyToManyTarget.objects.all()
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serializer = ManyToManyTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/manytomanytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/manytomanysource/1/', 'http://testserver/manytomanysource/2/', 'http://testserver/manytomanysource/3/']},
{'url': 'http://testserver/manytomanytarget/2/', 'name': 'target-2', 'sources': ['http://testserver/manytomanysource/2/', 'http://testserver/manytomanysource/3/']},
{'url': 'http://testserver/manytomanytarget/3/', 'name': 'target-3', 'sources': ['http://testserver/manytomanysource/3/']},
{'url': 'http://testserver/manytomanytarget/4/', 'name': 'target-4', 'sources': ['http://testserver/manytomanysource/1/', 'http://testserver/manytomanysource/3/']}
]
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self.assertEqual(serializer.data, expected)
class HyperlinkedForeignKeyTests(TestCase):
urls = 'tests.test_relations_hyperlink'
def setUp(self):
target = ForeignKeyTarget(name='target-1')
target.save()
new_target = ForeignKeyTarget(name='target-2')
new_target.save()
for idx in range(1, 4):
source = ForeignKeySource(name='source-%d' % idx, target=target)
source.save()
def test_foreign_key_retrieve(self):
queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/foreignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/foreignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/foreignkeysource/3/', 'name': 'source-3', 'target': 'http://testserver/foreignkeytarget/1/'}
]
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self.assertEqual(serializer.data, expected)
def test_reverse_foreign_key_retrieve(self):
queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/foreignkeytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/foreignkeysource/1/', 'http://testserver/foreignkeysource/2/', 'http://testserver/foreignkeysource/3/']},
{'url': 'http://testserver/foreignkeytarget/2/', 'name': 'target-2', 'sources': []},
]
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self.assertEqual(serializer.data, expected)
def test_foreign_key_update(self):
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data = {'url': 'http://testserver/foreignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/2/'}
instance = ForeignKeySource.objects.get(pk=1)
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serializer = ForeignKeySourceSerializer(instance, data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.data, data)
serializer.save()
# Ensure source 1 is updated, and everything else is as expected
queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/foreignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/2/'},
{'url': 'http://testserver/foreignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/foreignkeysource/3/', 'name': 'source-3', 'target': 'http://testserver/foreignkeytarget/1/'}
]
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self.assertEqual(serializer.data, expected)
def test_foreign_key_update_incorrect_type(self):
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data = {'url': 'http://testserver/foreignkeysource/1/', 'name': 'source-1', 'target': 2}
instance = ForeignKeySource.objects.get(pk=1)
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serializer = ForeignKeySourceSerializer(instance, data=data, context={'request': request})
self.assertFalse(serializer.is_valid())
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self.assertEqual(serializer.errors, {'target': ['Incorrect type. Expected url string, received int.']})
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def test_reverse_foreign_key_update(self):
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data = {'url': 'http://testserver/foreignkeytarget/2/', 'name': 'target-2', 'sources': ['http://testserver/foreignkeysource/1/', 'http://testserver/foreignkeysource/3/']}
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instance = ForeignKeyTarget.objects.get(pk=2)
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serializer = ForeignKeyTargetSerializer(instance, data=data, context={'request': request})
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self.assertTrue(serializer.is_valid())
# We shouldn't have saved anything to the db yet since save
# hasn't been called.
queryset = ForeignKeyTarget.objects.all()
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new_serializer = ForeignKeyTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/foreignkeytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/foreignkeysource/1/', 'http://testserver/foreignkeysource/2/', 'http://testserver/foreignkeysource/3/']},
{'url': 'http://testserver/foreignkeytarget/2/', 'name': 'target-2', 'sources': []},
]
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self.assertEqual(new_serializer.data, expected)
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serializer.save()
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self.assertEqual(serializer.data, data)
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# Ensure target 2 is update, and everything else is as expected
queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset, many=True, context={'request': request})
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expected = [
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{'url': 'http://testserver/foreignkeytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/foreignkeysource/2/']},
{'url': 'http://testserver/foreignkeytarget/2/', 'name': 'target-2', 'sources': ['http://testserver/foreignkeysource/1/', 'http://testserver/foreignkeysource/3/']},
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_create(self):
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data = {'url': 'http://testserver/foreignkeysource/4/', 'name': 'source-4', 'target': 'http://testserver/foreignkeytarget/2/'}
serializer = ForeignKeySourceSerializer(data=data, context={'request': request})
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self.assertTrue(serializer.is_valid())
obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'source-4')
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# Ensure source 1 is updated, and everything else is as expected
queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset, many=True, context={'request': request})
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expected = [
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{'url': 'http://testserver/foreignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/foreignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/foreignkeysource/3/', 'name': 'source-3', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/foreignkeysource/4/', 'name': 'source-4', 'target': 'http://testserver/foreignkeytarget/2/'},
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]
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self.assertEqual(serializer.data, expected)
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def test_reverse_foreign_key_create(self):
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data = {'url': 'http://testserver/foreignkeytarget/3/', 'name': 'target-3', 'sources': ['http://testserver/foreignkeysource/1/', 'http://testserver/foreignkeysource/3/']}
serializer = ForeignKeyTargetSerializer(data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'target-3')
# Ensure target 4 is added, and everything else is as expected
queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/foreignkeytarget/1/', 'name': 'target-1', 'sources': ['http://testserver/foreignkeysource/2/']},
{'url': 'http://testserver/foreignkeytarget/2/', 'name': 'target-2', 'sources': []},
{'url': 'http://testserver/foreignkeytarget/3/', 'name': 'target-3', 'sources': ['http://testserver/foreignkeysource/1/', 'http://testserver/foreignkeysource/3/']},
]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_update_with_invalid_null(self):
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data = {'url': 'http://testserver/foreignkeysource/1/', 'name': 'source-1', 'target': None}
instance = ForeignKeySource.objects.get(pk=1)
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serializer = ForeignKeySourceSerializer(instance, data=data, context={'request': request})
self.assertFalse(serializer.is_valid())
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self.assertEqual(serializer.errors, {'target': ['This field is required.']})
class HyperlinkedNullableForeignKeyTests(TestCase):
urls = 'tests.test_relations_hyperlink'
def setUp(self):
target = ForeignKeyTarget(name='target-1')
target.save()
for idx in range(1, 4):
if idx == 3:
target = None
source = NullableForeignKeySource(name='source-%d' % idx, target=target)
source.save()
def test_foreign_key_retrieve_with_null(self):
queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/3/', 'name': 'source-3', 'target': None},
]
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self.assertEqual(serializer.data, expected)
def test_foreign_key_create_with_valid_null(self):
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data = {'url': 'http://testserver/nullableforeignkeysource/4/', 'name': 'source-4', 'target': None}
serializer = NullableForeignKeySourceSerializer(data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'source-4')
# Ensure source 4 is created, and everything else is as expected
queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/3/', 'name': 'source-3', 'target': None},
{'url': 'http://testserver/nullableforeignkeysource/4/', 'name': 'source-4', 'target': None}
]
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self.assertEqual(serializer.data, expected)
def test_foreign_key_create_with_valid_emptystring(self):
"""
The emptystring should be interpreted as null in the context
of relationships.
"""
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data = {'url': 'http://testserver/nullableforeignkeysource/4/', 'name': 'source-4', 'target': ''}
expected_data = {'url': 'http://testserver/nullableforeignkeysource/4/', 'name': 'source-4', 'target': None}
serializer = NullableForeignKeySourceSerializer(data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
obj = serializer.save()
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self.assertEqual(serializer.data, expected_data)
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self.assertEqual(obj.name, 'source-4')
# Ensure source 4 is created, and everything else is as expected
queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/3/', 'name': 'source-3', 'target': None},
{'url': 'http://testserver/nullableforeignkeysource/4/', 'name': 'source-4', 'target': None}
]
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self.assertEqual(serializer.data, expected)
def test_foreign_key_update_with_valid_null(self):
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data = {'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': None}
instance = NullableForeignKeySource.objects.get(pk=1)
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serializer = NullableForeignKeySourceSerializer(instance, data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.data, data)
serializer.save()
# Ensure source 1 is updated, and everything else is as expected
queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': None},
{'url': 'http://testserver/nullableforeignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/3/', 'name': 'source-3', 'target': None},
]
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self.assertEqual(serializer.data, expected)
def test_foreign_key_update_with_valid_emptystring(self):
"""
The emptystring should be interpreted as null in the context
of relationships.
"""
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data = {'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': ''}
expected_data = {'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': None}
instance = NullableForeignKeySource.objects.get(pk=1)
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serializer = NullableForeignKeySourceSerializer(instance, data=data, context={'request': request})
self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.data, expected_data)
serializer.save()
# Ensure source 1 is updated, and everything else is as expected
queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/nullableforeignkeysource/1/', 'name': 'source-1', 'target': None},
{'url': 'http://testserver/nullableforeignkeysource/2/', 'name': 'source-2', 'target': 'http://testserver/foreignkeytarget/1/'},
{'url': 'http://testserver/nullableforeignkeysource/3/', 'name': 'source-3', 'target': None},
]
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self.assertEqual(serializer.data, expected)
# reverse foreign keys MUST be read_only
# In the general case they do not provide .remove() or .clear()
# and cannot be arbitrarily set.
# def test_reverse_foreign_key_update(self):
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# data = {'id': 1, 'name': 'target-1', 'sources': [1]}
# instance = ForeignKeyTarget.objects.get(pk=1)
# serializer = ForeignKeyTargetSerializer(instance, data=data)
# self.assertTrue(serializer.is_valid())
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# self.assertEqual(serializer.data, data)
# serializer.save()
# # Ensure target 1 is updated, and everything else is as expected
# queryset = ForeignKeyTarget.objects.all()
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# serializer = ForeignKeyTargetSerializer(queryset, many=True)
# expected = [
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# {'id': 1, 'name': 'target-1', 'sources': [1]},
# {'id': 2, 'name': 'target-2', 'sources': []},
# ]
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# self.assertEqual(serializer.data, expected)
class HyperlinkedNullableOneToOneTests(TestCase):
urls = 'tests.test_relations_hyperlink'
def setUp(self):
target = OneToOneTarget(name='target-1')
target.save()
new_target = OneToOneTarget(name='target-2')
new_target.save()
source = NullableOneToOneSource(name='source-1', target=target)
source.save()
def test_reverse_foreign_key_retrieve_with_null(self):
queryset = OneToOneTarget.objects.all()
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serializer = NullableOneToOneTargetSerializer(queryset, many=True, context={'request': request})
expected = [
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{'url': 'http://testserver/onetoonetarget/1/', 'name': 'target-1', 'nullable_source': 'http://testserver/nullableonetoonesource/1/'},
{'url': 'http://testserver/onetoonetarget/2/', 'name': 'target-2', 'nullable_source': None},
]
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self.assertEqual(serializer.data, expected)
# Regression tests for #694 (`source` attribute on related fields)
class HyperlinkedRelatedFieldSourceTests(TestCase):
urls = 'tests.test_relations_hyperlink'
def test_related_manager_source(self):
"""
Relational fields should be able to use manager-returning methods as their source.
"""
BlogPost.objects.create(title='blah')
field = serializers.HyperlinkedRelatedField(
many=True,
source='get_blogposts_manager',
view_name='dummy-url',
)
field.context = {'request': request}
class ClassWithManagerMethod(object):
def get_blogposts_manager(self):
return BlogPost.objects
obj = ClassWithManagerMethod()
value = field.field_to_native(obj, 'field_name')
self.assertEqual(value, ['http://testserver/dummyurl/1/'])
def test_related_queryset_source(self):
"""
Relational fields should be able to use queryset-returning methods as their source.
"""
BlogPost.objects.create(title='blah')
field = serializers.HyperlinkedRelatedField(
many=True,
source='get_blogposts_queryset',
view_name='dummy-url',
)
field.context = {'request': request}
class ClassWithQuerysetMethod(object):
def get_blogposts_queryset(self):
return BlogPost.objects.all()
obj = ClassWithQuerysetMethod()
value = field.field_to_native(obj, 'field_name')
self.assertEqual(value, ['http://testserver/dummyurl/1/'])
def test_dotted_source(self):
"""
Source argument should support dotted.source notation.
"""
BlogPost.objects.create(title='blah')
field = serializers.HyperlinkedRelatedField(
many=True,
source='a.b.c',
view_name='dummy-url',
)
field.context = {'request': request}
class ClassWithQuerysetMethod(object):
a = {
'b': {
'c': BlogPost.objects.all()
}
}
obj = ClassWithQuerysetMethod()
value = field.field_to_native(obj, 'field_name')
self.assertEqual(value, ['http://testserver/dummyurl/1/'])