python - put() 至少需要 3 个参数(给定 2 个)

Question

这是我在 Views.py 中的代码

class NotificationsViewSet(viewsets.ModelViewSet):
    permission_classes = [permissions.IsAuthenticated, TokenHasReadWriteScope]
    queryset = Notifications.objects.all()
    serializer_class = NotificationsSerializer
    filter_fields = ('status','task','survey_type',)

    def put(self, request, pk, format=None):
        notifications = self.get_object(pk)
        serializer = NotificationsSerializer(notifications, data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    def delete(self, request, pk, format=None):
        notifications = self.get_object(pk)
        notifications.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

当我尝试使用 PUT 方法时，出现错误 put() 至少需要 3 个参数(给定 2 个参数)。我的代码有什么问题吗？

Answer 1

def put(self, request, pk, format=None):

它至少需要 3 个参数。喜欢:

self.put(request, pk)

需要传递self变量。

或者，

put(self, request, pk)

或者最多 4 个参数，

self.put(request, pk, format)