Invalid serializer with detail_route and serializer_class override

[Nnonexistent]

For example, for my_custom_action django-rest-swagger will use SomeSerializer instead of MyCustomSerializer.

class MyViewSet(viewsets.GenericViewSet):
    serializer_class = SomeSerializer

    @detail_route(methods=['post', 'delete'], serializer_class=MyCustomSerializer)
    def my_custom_action(self, request, pk):
        ...

[Nnonexistent]

Thi is fixed in DRF 3.4.2. See encode/django-rest-framework#4359