mirror of
https://github.com/encode/django-rest-framework.git
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552 lines
22 KiB
Python
552 lines
22 KiB
Python
from __future__ import unicode_literals
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from django.db import models
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from django.test import TestCase
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from rest_framework import serializers
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from rest_framework.tests.models import (
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BlogPost, ManyToManyTarget, ManyToManySource, ForeignKeyTarget, ForeignKeySource,
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NullableForeignKeySource, OneToOneTarget, NullableOneToOneSource,
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)
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from rest_framework.compat import six
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# ManyToMany
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class ManyToManyTargetSerializer(serializers.ModelSerializer):
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class Meta:
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model = ManyToManyTarget
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fields = ('id', 'name', 'sources')
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class ManyToManySourceSerializer(serializers.ModelSerializer):
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class Meta:
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model = ManyToManySource
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fields = ('id', 'name', 'targets')
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# ForeignKey
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class ForeignKeyTargetSerializer(serializers.ModelSerializer):
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class Meta:
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model = ForeignKeyTarget
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fields = ('id', 'name', 'sources')
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class ForeignKeySourceSerializer(serializers.ModelSerializer):
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class Meta:
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model = ForeignKeySource
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fields = ('id', 'name', 'target')
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# Nullable ForeignKey
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class NullableForeignKeySourceSerializer(serializers.ModelSerializer):
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class Meta:
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model = NullableForeignKeySource
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fields = ('id', 'name', 'target')
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# Nullable OneToOne
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class NullableOneToOneTargetSerializer(serializers.ModelSerializer):
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class Meta:
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model = OneToOneTarget
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fields = ('id', 'name', 'nullable_source')
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# TODO: Add test that .data cannot be accessed prior to .is_valid
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class PKManyToManyTests(TestCase):
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def setUp(self):
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for idx in range(1, 4):
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target = ManyToManyTarget(name='target-%d' % idx)
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target.save()
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source = ManyToManySource(name='source-%d' % idx)
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source.save()
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for target in ManyToManyTarget.objects.all():
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source.targets.add(target)
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def test_many_to_many_retrieve(self):
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queryset = ManyToManySource.objects.all()
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serializer = ManyToManySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'targets': [1]},
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{'id': 2, 'name': 'source-2', 'targets': [1, 2]},
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{'id': 3, 'name': 'source-3', 'targets': [1, 2, 3]}
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]
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self.assertEqual(serializer.data, expected)
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def test_reverse_many_to_many_retrieve(self):
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queryset = ManyToManyTarget.objects.all()
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serializer = ManyToManyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [1, 2, 3]},
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{'id': 2, 'name': 'target-2', 'sources': [2, 3]},
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{'id': 3, 'name': 'target-3', 'sources': [3]}
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]
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self.assertEqual(serializer.data, expected)
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def test_many_to_many_update(self):
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data = {'id': 1, 'name': 'source-1', 'targets': [1, 2, 3]}
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instance = ManyToManySource.objects.get(pk=1)
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serializer = ManyToManySourceSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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serializer.save()
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self.assertEqual(serializer.data, data)
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# Ensure source 1 is updated, and everything else is as expected
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queryset = ManyToManySource.objects.all()
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serializer = ManyToManySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'targets': [1, 2, 3]},
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{'id': 2, 'name': 'source-2', 'targets': [1, 2]},
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{'id': 3, 'name': 'source-3', 'targets': [1, 2, 3]}
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]
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self.assertEqual(serializer.data, expected)
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def test_reverse_many_to_many_update(self):
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data = {'id': 1, 'name': 'target-1', 'sources': [1]}
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instance = ManyToManyTarget.objects.get(pk=1)
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serializer = ManyToManyTargetSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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serializer.save()
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self.assertEqual(serializer.data, data)
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# Ensure target 1 is updated, and everything else is as expected
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queryset = ManyToManyTarget.objects.all()
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serializer = ManyToManyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [1]},
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{'id': 2, 'name': 'target-2', 'sources': [2, 3]},
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{'id': 3, 'name': 'target-3', 'sources': [3]}
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]
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self.assertEqual(serializer.data, expected)
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def test_many_to_many_create(self):
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data = {'id': 4, 'name': 'source-4', 'targets': [1, 3]}
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serializer = ManyToManySourceSerializer(data=data)
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self.assertTrue(serializer.is_valid())
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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 4 is added, and everything else is as expected
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queryset = ManyToManySource.objects.all()
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serializer = ManyToManySourceSerializer(queryset, many=True)
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self.assertFalse(serializer.fields['targets'].read_only)
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expected = [
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{'id': 1, 'name': 'source-1', 'targets': [1]},
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{'id': 2, 'name': 'source-2', 'targets': [1, 2]},
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{'id': 3, 'name': 'source-3', 'targets': [1, 2, 3]},
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{'id': 4, 'name': 'source-4', 'targets': [1, 3]},
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]
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self.assertEqual(serializer.data, expected)
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def test_reverse_many_to_many_create(self):
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data = {'id': 4, 'name': 'target-4', 'sources': [1, 3]}
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serializer = ManyToManyTargetSerializer(data=data)
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self.assertFalse(serializer.fields['sources'].read_only)
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self.assertTrue(serializer.is_valid())
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obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'target-4')
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# Ensure target 4 is added, and everything else is as expected
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queryset = ManyToManyTarget.objects.all()
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serializer = ManyToManyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [1, 2, 3]},
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{'id': 2, 'name': 'target-2', 'sources': [2, 3]},
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{'id': 3, 'name': 'target-3', 'sources': [3]},
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{'id': 4, 'name': 'target-4', 'sources': [1, 3]}
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]
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self.assertEqual(serializer.data, expected)
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class PKForeignKeyTests(TestCase):
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def setUp(self):
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target = ForeignKeyTarget(name='target-1')
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target.save()
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new_target = ForeignKeyTarget(name='target-2')
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new_target.save()
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for idx in range(1, 4):
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source = ForeignKeySource(name='source-%d' % idx, target=target)
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source.save()
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def test_foreign_key_retrieve(self):
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queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': 1},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': 1}
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]
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self.assertEqual(serializer.data, expected)
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def test_reverse_foreign_key_retrieve(self):
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [1, 2, 3]},
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{'id': 2, 'name': 'target-2', 'sources': []},
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_update(self):
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data = {'id': 1, 'name': 'source-1', 'target': 2}
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instance = ForeignKeySource.objects.get(pk=1)
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serializer = ForeignKeySourceSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.data, data)
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serializer.save()
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# Ensure source 1 is updated, and everything else is as expected
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queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': 2},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': 1}
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_update_incorrect_type(self):
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data = {'id': 1, 'name': 'source-1', 'target': 'foo'}
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instance = ForeignKeySource.objects.get(pk=1)
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serializer = ForeignKeySourceSerializer(instance, data=data)
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self.assertFalse(serializer.is_valid())
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self.assertEqual(serializer.errors, {'target': ['Incorrect type. Expected pk value, received %s.' % six.text_type.__name__]})
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def test_reverse_foreign_key_update(self):
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data = {'id': 2, 'name': 'target-2', 'sources': [1, 3]}
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instance = ForeignKeyTarget.objects.get(pk=2)
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serializer = ForeignKeyTargetSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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# We shouldn't have saved anything to the db yet since save
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# hasn't been called.
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queryset = ForeignKeyTarget.objects.all()
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new_serializer = ForeignKeyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [1, 2, 3]},
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{'id': 2, 'name': 'target-2', 'sources': []},
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]
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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
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [2]},
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{'id': 2, 'name': 'target-2', 'sources': [1, 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 = {'id': 4, 'name': 'source-4', 'target': 2}
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serializer = ForeignKeySourceSerializer(data=data)
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self.assertTrue(serializer.is_valid())
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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 4 is added, and everything else is as expected
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queryset = ForeignKeySource.objects.all()
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serializer = ForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': 1},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': 1},
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{'id': 4, 'name': 'source-4', 'target': 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 = {'id': 3, 'name': 'target-3', 'sources': [1, 3]}
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serializer = ForeignKeyTargetSerializer(data=data)
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self.assertTrue(serializer.is_valid())
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obj = serializer.save()
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self.assertEqual(serializer.data, data)
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self.assertEqual(obj.name, 'target-3')
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# Ensure target 3 is added, and everything else is as expected
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queryset = ForeignKeyTarget.objects.all()
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serializer = ForeignKeyTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'sources': [2]},
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{'id': 2, 'name': 'target-2', 'sources': []},
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{'id': 3, 'name': 'target-3', 'sources': [1, 3]},
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]
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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 = {'id': 1, 'name': 'source-1', 'target': None}
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instance = ForeignKeySource.objects.get(pk=1)
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serializer = ForeignKeySourceSerializer(instance, data=data)
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self.assertFalse(serializer.is_valid())
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self.assertEqual(serializer.errors, {'target': ['This field is required.']})
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def test_foreign_key_with_empty(self):
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"""
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Regression test for #1072
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https://github.com/tomchristie/django-rest-framework/issues/1072
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"""
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serializer = NullableForeignKeySourceSerializer()
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self.assertEqual(serializer.data['target'], None)
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class PKNullableForeignKeyTests(TestCase):
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def setUp(self):
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target = ForeignKeyTarget(name='target-1')
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target.save()
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for idx in range(1, 4):
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if idx == 3:
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target = None
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source = NullableForeignKeySource(name='source-%d' % idx, target=target)
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source.save()
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def test_foreign_key_retrieve_with_null(self):
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queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': 1},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': None},
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_create_with_valid_null(self):
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data = {'id': 4, 'name': 'source-4', 'target': None}
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serializer = NullableForeignKeySourceSerializer(data=data)
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self.assertTrue(serializer.is_valid())
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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 4 is created, and everything else is as expected
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queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': 1},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': None},
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{'id': 4, 'name': 'source-4', 'target': None}
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_create_with_valid_emptystring(self):
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"""
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The emptystring should be interpreted as null in the context
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of relationships.
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"""
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data = {'id': 4, 'name': 'source-4', 'target': ''}
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expected_data = {'id': 4, 'name': 'source-4', 'target': None}
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serializer = NullableForeignKeySourceSerializer(data=data)
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self.assertTrue(serializer.is_valid())
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obj = serializer.save()
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self.assertEqual(serializer.data, expected_data)
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self.assertEqual(obj.name, 'source-4')
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# Ensure source 4 is created, and everything else is as expected
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queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': 1},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': None},
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{'id': 4, 'name': 'source-4', 'target': None}
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_update_with_valid_null(self):
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data = {'id': 1, 'name': 'source-1', 'target': None}
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instance = NullableForeignKeySource.objects.get(pk=1)
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serializer = NullableForeignKeySourceSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.data, data)
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serializer.save()
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# Ensure source 1 is updated, and everything else is as expected
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queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': None},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': None}
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]
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self.assertEqual(serializer.data, expected)
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def test_foreign_key_update_with_valid_emptystring(self):
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"""
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The emptystring should be interpreted as null in the context
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of relationships.
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"""
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data = {'id': 1, 'name': 'source-1', 'target': ''}
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expected_data = {'id': 1, 'name': 'source-1', 'target': None}
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instance = NullableForeignKeySource.objects.get(pk=1)
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serializer = NullableForeignKeySourceSerializer(instance, data=data)
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self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.data, expected_data)
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serializer.save()
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# Ensure source 1 is updated, and everything else is as expected
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queryset = NullableForeignKeySource.objects.all()
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serializer = NullableForeignKeySourceSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'source-1', 'target': None},
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{'id': 2, 'name': 'source-2', 'target': 1},
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{'id': 3, 'name': 'source-3', 'target': None}
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]
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self.assertEqual(serializer.data, expected)
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# reverse foreign keys MUST be read_only
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# In the general case they do not provide .remove() or .clear()
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# and cannot be arbitrarily set.
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# def test_reverse_foreign_key_update(self):
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# data = {'id': 1, 'name': 'target-1', 'sources': [1]}
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# instance = ForeignKeyTarget.objects.get(pk=1)
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# serializer = ForeignKeyTargetSerializer(instance, data=data)
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# self.assertTrue(serializer.is_valid())
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# self.assertEqual(serializer.data, data)
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# serializer.save()
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# # Ensure target 1 is updated, and everything else is as expected
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# queryset = ForeignKeyTarget.objects.all()
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# serializer = ForeignKeyTargetSerializer(queryset, many=True)
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# expected = [
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# {'id': 1, 'name': 'target-1', 'sources': [1]},
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# {'id': 2, 'name': 'target-2', 'sources': []},
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# ]
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# self.assertEqual(serializer.data, expected)
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class PKNullableOneToOneTests(TestCase):
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def setUp(self):
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target = OneToOneTarget(name='target-1')
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target.save()
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new_target = OneToOneTarget(name='target-2')
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new_target.save()
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source = NullableOneToOneSource(name='source-1', target=new_target)
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source.save()
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def test_reverse_foreign_key_retrieve_with_null(self):
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queryset = OneToOneTarget.objects.all()
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serializer = NullableOneToOneTargetSerializer(queryset, many=True)
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expected = [
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{'id': 1, 'name': 'target-1', 'nullable_source': None},
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{'id': 2, 'name': 'target-2', 'nullable_source': 1},
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]
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self.assertEqual(serializer.data, expected)
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# The below models and tests ensure that serializer fields corresponding
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# to a ManyToManyField field with a user-specified ``through`` model are
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# set to read only
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class ManyToManyThroughTarget(models.Model):
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name = models.CharField(max_length=100)
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class ManyToManyThrough(models.Model):
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source = models.ForeignKey('ManyToManyThroughSource')
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target = models.ForeignKey(ManyToManyThroughTarget)
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|
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class ManyToManyThroughSource(models.Model):
|
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name = models.CharField(max_length=100)
|
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targets = models.ManyToManyField(ManyToManyThroughTarget,
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related_name='sources',
|
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through='ManyToManyThrough')
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|
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|
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class ManyToManyThroughTargetSerializer(serializers.ModelSerializer):
|
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class Meta:
|
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model = ManyToManyThroughTarget
|
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fields = ('id', 'name', 'sources')
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|
|
|
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class ManyToManyThroughSourceSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ManyToManyThroughSource
|
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fields = ('id', 'name', 'targets')
|
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|
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|
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class PKManyToManyThroughTests(TestCase):
|
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def setUp(self):
|
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self.source = ManyToManyThroughSource.objects.create(
|
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name='through-source-1')
|
|
self.target = ManyToManyThroughTarget.objects.create(
|
|
name='through-target-1')
|
|
|
|
def test_many_to_many_create(self):
|
|
data = {'id': 2, 'name': 'source-2', 'targets': [self.target.pk]}
|
|
serializer = ManyToManyThroughSourceSerializer(data=data)
|
|
self.assertTrue(serializer.fields['targets'].read_only)
|
|
self.assertTrue(serializer.is_valid())
|
|
obj = serializer.save()
|
|
self.assertEqual(obj.name, 'source-2')
|
|
self.assertEqual(obj.targets.count(), 0)
|
|
|
|
def test_many_to_many_reverse_create(self):
|
|
data = {'id': 2, 'name': 'target-2', 'sources': [self.source.pk]}
|
|
serializer = ManyToManyThroughTargetSerializer(data=data)
|
|
self.assertTrue(serializer.fields['sources'].read_only)
|
|
self.assertTrue(serializer.is_valid())
|
|
serializer.save()
|
|
obj = serializer.save()
|
|
self.assertEqual(obj.name, 'target-2')
|
|
self.assertEqual(obj.sources.count(), 0)
|
|
|
|
|
|
# Regression tests for #694 (`source` attribute on related fields)
|
|
|
|
|
|
class PrimaryKeyRelatedFieldSourceTests(TestCase):
|
|
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.PrimaryKeyRelatedField(many=True, source='get_blogposts_manager')
|
|
|
|
class ClassWithManagerMethod(object):
|
|
def get_blogposts_manager(self):
|
|
return BlogPost.objects
|
|
|
|
obj = ClassWithManagerMethod()
|
|
value = field.field_to_native(obj, 'field_name')
|
|
self.assertEqual(value, [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.PrimaryKeyRelatedField(many=True, source='get_blogposts_queryset')
|
|
|
|
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, [1])
|
|
|
|
def test_dotted_source(self):
|
|
"""
|
|
Source argument should support dotted.source notation.
|
|
"""
|
|
BlogPost.objects.create(title='blah')
|
|
field = serializers.PrimaryKeyRelatedField(many=True, source='a.b.c')
|
|
|
|
class ClassWithQuerysetMethod(object):
|
|
a = {
|
|
'b': {
|
|
'c': BlogPost.objects.all()
|
|
}
|
|
}
|
|
|
|
obj = ClassWithQuerysetMethod()
|
|
value = field.field_to_native(obj, 'field_name')
|
|
self.assertEqual(value, [1])
|