Example of a Django Rest Framework ViewSet with nested views

drf-nested-views.py

# ViewSets define the view behavior.
class FooViewSet(viewsets.ModelViewSet):
    lookup_field = 'slug'
    queryset = Foo.objects.all()
    serializer_class = FooSerializer

    def get_queryset(self):
        """
        This view should return a list of all records
        """
        return Foo.objects.all().order_by('name')

    # GET: /api/v1/foo/1/bar/
    @detail_route(methods=['get'])
    def bar(self, request, slug=None):
        foo = self.get_object()

        qs = foo.bars.all().order_by('date')
        
        page = self.paginate_queryset(qs)
        if page is not None:
            serializer = BarSerializer(page, many=True)
            return self.get_paginated_response(serializer.data)

        serializer = BarSerializer(qs, many=True)
        return Response(serializer.data)
      
    # GET: /api/v1/foo/1/foobar/  - THIS FUNCTION HAS NOT BEEN TESTED - MAY NOT WORK
    @detail_route(methods=['post'])
    def foobar(self, request, slug=None):
        foo = self.get_object()
        
        serializer = BarSerializer(data=request.data)
        if serializer.is_valid():
          new_bar = Bar.objects.create(...)
          
        return Response({'id': new_bar.id})
      
    # POST: /api/v1/foo/new_bar/ with support for multi-payloads
    @list_route(methods=['post'])
    def new_bar(self, request, *args, **kwargs):
        serializer = BarSerializer(data=request.data, many=isinstance(request.data, list))
        if serializer.is_valid():
            if isinstance(serializer.validated_data, list):
                response_status = some_function_to_create_objects_in_batch(serializer.validated_data)

                return Response(data, response_status)

            else:
                response_status = some_function_to_create_objects_in_batch(serializer.validated_data)

            return Response(data, status=response_status)
        else:
            return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)