diff options
Diffstat (limited to 'rest_framework/serializers.py')
| -rw-r--r-- | rest_framework/serializers.py | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py index 9f3e53fd..03e20df8 100644 --- a/rest_framework/serializers.py +++ b/rest_framework/serializers.py @@ -344,7 +344,25 @@ class ModelSerializer(Serializer): def create(self, attrs): ModelClass = self.Meta.model - return ModelClass.objects.create(**attrs) + + # Remove many-to-many relationships from attrs. + # They are not valid arguments to the default `.create()` method, + # as they require that the instance has already been saved. + info = model_meta.get_field_info(ModelClass) + many_to_many = {} + for key, relation_info in info.relations.items(): + if relation_info.to_many and (key in attrs): + many_to_many[key] = attrs.pop(key) + + instance = ModelClass.objects.create(**attrs) + + # Save many to many relationships after the instance is created. + if many_to_many: + for key, value in many_to_many.items(): + setattr(instance, key, value) + instance.save() + + return instance def update(self, obj, attrs): for attr, value in attrs.items(): |
