@action(..., serializer_class=MyClass) has no effect if get_serializer_class is defined

[jpmckinney]

For example:

class ViewSet(viewsets.GenericViewSet):

    def get_serializer_class(self):
        if self.request.method == "DELETE":
            return DeleteSerializer
        return DefaultSerializer

    @action(detail=False, serializer_class=AnotherSerializer):
    def some_action(self, request):
        # self.get_serializer() uses DefaultSerializer instead of AnotherSerializer

I had expected the action to use AnotherSerializer.