filter_queryset 带有布尔字段

Question

我有以下看法：

class MessagesViewSet(ModelViewSet):
    """
    A simple ViewSet for viewing and editing the messages
    associated with the user.
    """
    authentication_classes = [TokenAuthentication, ]
    permission_classes = [IsAuthenticated]
    serializer_class = MessageSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = [MessageFields.MARK_READ]

    def get_user(self):
        user = self.request.user
        return user

    def get_queryset(self):
        return Message.objects.filter(sent_to=self.get_user())

    def perform_create(self, serializer):
        serializer.save(sender=self.get_user())

    @action(detail=True, )
    def unread_messages(self, request, pk):
        """
        Return all of the user's unread messages.
        """
        data = self.filter_queryset(self.get_queryset())
        serialized_data = MessageSerializer(data, many=True)
        return Response(serialized_data.data, status=HTTP_200_OK)

in unread_messages 我只想 return 具有 mark_read = True 的对象（这是一个布尔字段）。现在它 return 是所有对象，因为在方法中没有关于是真还是假的限制。

那么如何在方法中设置某种标志？

Answer 1

你用 mark_read 过滤它是（可能）False:

class MessagesViewSet(ModelViewSet):
    """
    A simple ViewSet for viewing and editing the messages
    associated with the user.
    """
    authentication_classes = [TokenAuthentication, ]
    permission_classes = [IsAuthenticated]
    serializer_class = MessageSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = [MessageFields.MARK_READ]

    def get_user(self):
        user = self.request.user
        return user

    def get_queryset(self):
        return Message.objects.filter(sent_to=self.get_user()<b>, mark_read=False</b>)

    def perform_create(self, serializer):
        serializer.save(sender=self.get_user())

    @action(detail=True, )
    def unread_messages(self, request, pk):
        """
        Return all of the user's unread messages.
        """
        data = self.filter_queryset(self.get_queryset())
        serialized_data = MessageSerializer(data, many=True)
        return Response(serialized_data.data, status=HTTP_200_OK)

或者您可以仅在 unread_messages 中过滤这些：

class MessagesViewSet(ModelViewSet):
    """
    A simple ViewSet for viewing and editing the messages
    associated with the user.
    """
    authentication_classes = [TokenAuthentication, ]
    permission_classes = [IsAuthenticated]
    serializer_class = MessageSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = [MessageFields.MARK_READ]

    def get_user(self):
        user = self.request.user
        return user

    def get_queryset(self):
        return Message.objects.filter(sent_to=self.get_user())

    def perform_create(self, serializer):
        serializer.save(sender=self.get_user())

    @action(detail=True, )
    def unread_messages(self, request, pk):
        """
        Return all of the user's unread messages.
        """
        data = self.filter_queryset(self.get_queryset())<b>.filter(mark_read=False)</b>
        serialized_data = MessageSerializer(data, many=True)
        return Response(serialized_data.data, status=HTTP_200_OK)

filter_queryset 带有布尔字段

filter_queryset with boolean field

python

django

django-views

django-rest-framework

drf-queryset