CODEWITHSUNDEEP
pythondjangogenericsforeign-keysdjango-rest-framework
anduplats
anduplats

Reputation: 1003

Django REST framework foreign key with generics.ListCreateAPIView

How it is possible to get foreign key assigned in url with Django REST Framework?

class CommentList(generics.ListCreateAPIView):
    serializer_class = CommentSerializer
    pagination_class = StandardResultsSetPagination
    queryset = Comment.objects.all()
    def get(self, *args, **kwargs):
        serializer = CommentSerializer(comment, many=True)
        return super(CommentList, self).get(*args, **kwargs)

My goal is to use this URL (urls.py):

url(r'^event/(?P<pk>[0-9]+)/comments', views.CommentList.as_view())

Somehow I managed to get foreign key with this way

class CommentLikeList(APIView):
    def get(self, request, *args, **kwargs):
        key = self.kwargs['pk']
        commentLikes = CommentLike.objects.filter(pk=key)
        serializer = CommentLikeSerializer(commentLikes, many=True)
        return Response(serializer.data)
    def post(self):
        pass

But I don't know how to get foreign key with such URL using ''generics.ListCreateAPIView''

http://127.0.0.1:8000/event/<eventnumber>/comments

Upvotes: 2

Views: 1182

Answers (1)

levi
levi

Reputation: 22697

If you want to get the pk. You can use lookup_url_kwarg attribute from ListCreateAPIView class.

class CommentLikeList(ListCreateAPIView):

    def get(self, request, *args, **kwargs):
        key = self.kwargs[self.lookup_url_kwarg]
        commentLikes = CommentLike.objects.filter(pk=key)
        serializer = CommentLikeSerializer(commentLikes, many=True)
        return Response(serializer.data)

lookup_url_kwarg - The URL keyword argument that should be used for object lookup. The URL conf should include a keyword argument corresponding to this value. If unset this defaults to using the same value as lookup_field.

The default value for lookup_field attribute is 'pk'. So, if you change your url keyword argumento from another different to pk, you should define lookup_url_kwarg then. 

class CommentLikeList(ListCreateAPIView):
    lookup_url_kwarg = 'eventnumber'

You can inspect all DRF classes methods and attributes over here: http://www.cdrf.co/

Upvotes: 2

Related Questions