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from django.db import models
from django.test import TestCase
from rest_framework import serializers
# ForeignKey
class ForeignKeyTarget(models.Model):
name = models.CharField(max_length=100)
class ForeignKeySource(models.Model):
name = models.CharField(max_length=100)
target = models.ForeignKey(ForeignKeyTarget, related_name='sources')
class ForeignKeySourceSerializer(serializers.ModelSerializer):
class Meta:
model = ForeignKeySource
class ForeignKeyTargetSerializer(serializers.ModelSerializer):
sources = ForeignKeySourceSerializer()
class Meta:
model = ForeignKeyTarget
class ReverseForeignKeyTests(TestCase):
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_reverse_foreign_key_retrieve(self):
queryset = ForeignKeyTarget.objects.all()
serializer = ForeignKeyTargetSerializer(queryset)
expected = [
{'id': 1, 'name': u'target-1', 'sources': [
{'id': 1, 'name': u'source-1', 'target': 1},
{'id': 2, 'name': u'source-2', 'target': 1},
{'id': 3, 'name': u'source-3', 'target': 1},
]},
{'id': 2, 'name': u'target-2', 'sources': [
]}
]
self.assertEquals(serializer.data, expected)
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