Change a field in a Django REST Framework ModelSerializer based on the request type?

Question

Consider this case where I have a Book and Author model.

serializers.py

class AuthorSerializer(serializers.ModelSerializer):

         


        

Answer 1

You are looking for the get_serializer_class method on the ViewSet. This allows you to switch on request type for which serializer that you want to use.

from rest_framework import viewsets

class MyModelViewSet(viewsets.ModelViewSet):

    model = MyModel
    queryset = MyModel.objects.all()

    def get_serializer_class(self):
        if self.action in ('create', 'update', 'partial_update'):
            return MySerializerWithPrimaryKeysForCreatingOrUpdating
        else:
            return MySerializerWithNestedData