如何检查用户的在线和离线状态

Question

我正在尝试使用django和django rest框架检查并显示用户在线状态。

我已经尝试过这篇文章：Django - detect if user is online / offline 但不适用于APIview，仅适用于具有render和Httpresponse的视图。

已更新

这是中间件类的代码

import datetime
from django.core.cache import cache
from django.conf import settings
from django.utils.deprecation import MiddlewareMixin


class ActiveUserMiddleware(MiddlewareMixin):

    def process_request(self, request):
        current_user = request.user
        if request.user.is_authenticated:
        now = datetime.datetime.now()
        cache.set('seen_%s' % (current_user.username), now, settings.USER_LASTSEEN_TIMEOUT)

APIView     类ProfilePersonal（APIView）：     Permission_classes =（permissions.IsAuthenticated，）

serializer_class = UserProfileSerializer

def get(self):
    try:
        queryset = Account.objects.get()
    except Account.DoesNotExist:
        return Response(data={'non_field_errors': 'Request could not be validated.'},
                        status=status.HTTP_400_BAD_REQUEST)

    serializer_data = self.serializer_class(queryset)

    return Response(
        data=serializer_data,
        status=status.HTTP_200_OK
    )