django-rest-framework, multitable model inheritance, ModelSerializers and nested serializers

Question

I can\'t find this info in the docs or on the interwebs.
latest django-rest-framework, django 1.6.5

How does one create a ModelSerializer that can handle a nes

Answer 1

Using Django 3.1, I found that it is possible to override get_serializer instead of get_serializer_class, in which case you can access the instance as well as self.action and more.

By default get_serializer will call get_serializer_class, but this behavior can be adjusted to your needs.

This is cleaner and easier than the solutions proposed above, so I'm adding it to the thread.

Example:

class MySubclassViewSet(viewsets.ModelViewSet):
    # add your normal fields and methods ...

    def get_serializer(self, *args, **kwargs):
        if self.action in ('list', 'destroy'):
            return MyListSerializer(args[0], **kwargs)
        if self.action in ('retrieve', ):
            instance = args[0]
            if instance.name.contains("really?"):  # or check if instance of a certain Model...
                return MyReallyCoolSerializer(instance)
            else return MyNotCoolSerializer(instance)
        # ... 
        return MyListSerializer(*args, **kwargs)  # default