diff options
| -rw-r--r-- | rest_framework/serializers.py | 21 | ||||
| -rw-r--r-- | rest_framework/tests/test_genericrelations.py | 18 |
2 files changed, 29 insertions, 10 deletions
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py index cb7539e0..ea9509bf 100644 --- a/rest_framework/serializers.py +++ b/rest_framework/serializers.py @@ -16,6 +16,7 @@ import datetime import inspect import types from decimal import Decimal +from django.contrib.contenttypes.generic import GenericForeignKey from django.core.paginator import Page from django.db import models from django.forms import widgets @@ -943,6 +944,8 @@ class ModelSerializer(Serializer): # Forward m2m relations for field in meta.many_to_many + meta.virtual_fields: + if isinstance(field, GenericForeignKey): + continue if field.name in attrs: m2m_data[field.name] = attrs.pop(field.name) @@ -952,17 +955,15 @@ class ModelSerializer(Serializer): if isinstance(self.fields.get(field_name, None), Serializer): nested_forward_relations[field_name] = attrs[field_name] - # Update an existing instance... - if instance is not None: - for key, val in attrs.items(): - try: - setattr(instance, key, val) - except ValueError: - self._errors[key] = self.error_messages['required'] + # Create an empty instance of the model + if instance is None: + instance = self.opts.model() - # ...or create a new instance - else: - instance = self.opts.model(**attrs) + for key, val in attrs.items(): + try: + setattr(instance, key, val) + except ValueError: + self._errors[key] = self.error_messages['required'] # Any relations that cannot be set until we've # saved the model get hidden away on these diff --git a/rest_framework/tests/test_genericrelations.py b/rest_framework/tests/test_genericrelations.py index fa09c9e6..46a2d863 100644 --- a/rest_framework/tests/test_genericrelations.py +++ b/rest_framework/tests/test_genericrelations.py @@ -131,3 +131,21 @@ class TestGenericRelations(TestCase): } ] self.assertEqual(serializer.data, expected) + + def test_restore_object_generic_fk(self): + """ + Ensure an object with a generic foreign key can be restored. + """ + + class TagSerializer(serializers.ModelSerializer): + class Meta: + model = Tag + exclude = ('content_type', 'object_id') + + serializer = TagSerializer() + + bookmark = Bookmark(url='http://example.com') + attrs = {'tagged_item': bookmark, 'tag': 'example'} + + tag = serializer.restore_object(attrs) + self.assertEqual(tag.tagged_item, bookmark) |