views.py

class MyBaseViewSet(viewsets.ModelViewSet):
    def get_nested_serializer_class(self, serializer_class, related_name):
        lookup_key = (serializer_class, related_name)
        return serializers.NESTED_SERIALIZER_FIELD_MAP[lookup_key]

    def get_serializer(self, *args, **kwargs):
        serializer = super(MyBaseViewSet, self).get_serializer(*args, **kwargs)
        context = self.get_serializer_context()
        embed_str = context['request'].QUERY_PARAMS.get('embed', '')
        if not embed_str:
            return serializer
        serializer_class = self.get_serializer_class()
        for field in embed_str.split('|'):
            related_name, delimiter, nested_fields = field.partition(':')
            nested_serializer_class, to_many = self.get_nested_serializer_class(
                serializer_class,
                related_name
            )
            default_fields = ['resource_uri', 'absolute_uri']
            additional_fields = nested_fields.split(',') if nested_fields else []
            serializer.fields[related_name] = partially_nested(
                nested_serializer_class,
                serializer_kwargs=dict(many=to_many),
                include_fields=default_fields + additional_fields
            )
        return serializer