Mapping DRF GenericViewSet to http verbs via DefaultRouter

My goal is to implement adding a recipe to current user favorites list and removing it using Django Rest Framework 3.12.x.

POST api/recipes/{int:recipe_id}/favoriteDELETE api/recipes/{int:recipe_id}/favorite

Request body is empty. User_id is got from self.context['request'].user.id.

I.e. I need to serve POST and DELETE on the same URL.

I implemented that against DefaultRouter in conjunction with GenericViewSet, but can't get this implementation serving DELETE. Only POST is served properly.

The quesrtion is: what's wrong in the configuration? Why DRF returns 405 "Method Not Allowed" on DELETE calls and returns Http header Allow: POST, OPTIONS?

Router configuration:

from rest_framework import routersfrom api.views import FavoriteViewSet_v1_router = routers.DefaultRouter()_v1_router.register(    r'recipes/(?P<recipe_id>\d+)/favorite',    FavoriteViewSet,    basename='favorite')

View:

class FavoriteViewSet(    mixins.CreateModelMixin,    mixins.DestroyModelMixin,    viewsets.GenericViewSet):permission_classes = (IsAuthenticated,)http_method_names = ('post', 'delete', 'head', 'options',)queryset = Favorite.objects.all()serializer_class = FavoriteSerializerpagination_class = Nonedef get_permissions(self):    return super().get_permissions()def get_object(self):    return super().get_object()def retrieve(self, request, *args, **kwargs):    instance = self.get_object()    serializer = self.get_serializer(instance)    return Response(serializer.data)def destroy(self, request, *args, **kwargs):    super().destroy(request, *args, **kwargs)def get_serializer_class(self):    return super().get_serializer_class()def dispatch(self, request, *args, **kwargs):    p1 = hasattr(self, 'get')    p2 = hasattr(self, 'post')    p3 = hasattr(self, 'delete')    p4 = hasattr(self, 'options')    return super().dispatch(request, *args, **kwargs)

Having spent some time in the Debugger, I figured out, that router configures two instances of my View, but serves request each time on the first one.

def as_view(cls, actions=None, initkwargs) - got called twice during initialization.With parameters:

post: createsuffix: List, basename: favorite, detail: Falseget: retrieve, delete: destroysuffix: Instance, basename: favorite, detail: True

I see,that something is wrong with configuration, but couldn't figure out yet how to make DELETE request to the same URL being served on the second instance.

Under the Debugger I see that in dispatch:

def dispatch(self, request, *args, **kwargs):    p1 = hasattr(self, 'get')    p2 = hasattr(self, 'post')    p3 = hasattr(self, 'delete')    p4 = hasattr(self, 'options')    return super().dispatch(request, *args, **kwargs)

On picked view instance only p2 and p4 are True, so, view does not see 'delete' attribute presense in my view and rejects the request with 405.