PYTHON

django rest framework function based views

from rest_framework.decorators import api_view, permission_classes, renderer_classes
from rest_framework.permissions import IsAuthenticated
from rest_framework.renderers import JSONRenderer
from rest_framework.response import Response

@api_view(['GET'])
@permission_classes([IsAuthenticated])  # policy decorator
@renderer_classes([JSONRenderer])       # policy decorator
def items_not_done(request):
    user_count = Item.objects.filter(done=False).count()
    content = {'not_done': user_count}

    return Response(content)

django rest framework viewset

class UserViewSet(viewsets.ModelViewSet):
    """
    A viewset for viewing and editing user instances.
    """
    serializer_class = UserSerializer
    queryset = User.objects.all()