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(): | 
