python - Method Decorator in class based view is not working -


i using class based view , applied permission classes on post method using method decorator. till yesterday working of sudden stopped. unable find issue. 

class offercreatelistview(listcreateapiview):     serializer_class = offerserializer     queryset = offers.objects.filter(user__isnull=true)      @method_decorator(permission_classes((isauthenticated,)))     @method_decorator(authentication_classes((basicauthentication, sessionauthentication, tokenauthentication,)))     def post(self, request, *args, **kwargs):         return super(offercreatelistview, self).post(request, *args, **kwargs)

where doing wrong. there setting work??

the permission_classes , authentication_classes decorators designed function based views. haven't followed rest framework code way through, i'm surprised worked until yesterday -- don't decorators intended used class based views.

instead, set attributes on class. since want permission class applied post requests, sounds want isauthenticatedorreadonly.

class offercreatelistview(listcreateapiview):     permission_classes = (isauthenticatedorreadonly,)     authentication_classes = (basicauthentication, sessionauthentication, tokenauthentication,)     serializer_class = offerserializer     queryset = offers.objects.filter(user__isnull=true)

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