返回响应语句不返回任何响应答案

【问题标题】：Return response statement is not returning any response返回响应语句不返回任何响应
【发布时间】：2021-09-15 18:08:12
【问题描述】：

我正在创建一个注销视图，以使用 simplejwt 从我的 django restframework 中注销。没有直接的注销方式，因此只有将刷新令牌列入黑名单才是解决办法。

那些打印语句按预期工作，因此它确实将标记列入黑名单，但 return 语句不返回任何内容，为什么会这样，我如何返回响应？我猜 save 函数不返回任何内容，是真的吗？

class LogoutSerializer(serializers.Serializer):
    refresh = serializers.CharField()

    def validate(self, attrs):
        self.token = attrs['refresh']
        return attrs

    def save(self, **kwargs):
        try:
            RefreshToken(self.token).blacklist()
            print('done')
            return Response({'msg':'token has been blacklisted'})
       

        except TokenError:
            print('not done')
            return Response({'msg':'token is expired or blacklisted'})

views.py

class LogoutAPIView(APIView):
    serializer_class = LogoutSerializer
    permission_classes = [IsAuthenticated]

    def post(self, request):
        serializer = self.serializer_class(data = request.data)
        serializer.is_valid(raise_exception = True)
        serializer.save()

        return Response(status = status.HTTP_204_NO_CONTENT)

【问题讨论】：

标签： django rest serialization django-rest-framework django-rest-framework-simplejwt

【解决方案1】：

def post(self, request):
    serializer = self.serializer_class(data = request.data)
    serializer.is_valid(raise_exception = True)
    serializer.save()

    return Response(status = status.HTTP_204_NO_CONTENT) # this is the response that you're actually returning to the client.

如果您想在序列化程序中返回响应，您可以这样做：

class LogoutSerializer(serializers.Serializer):
    refresh = serializers.CharField()

    def validate(self, attrs):
        self.token = attrs['refresh']
        return attrs

    def save(self, **kwargs):
        RefreshToken(self.token).blacklist()

然后：

def post(self, request):
    serializer = self.serializer_class(data = request.data)
    serializer.is_valid(raise_exception = True)
    try:
        serializer.save()
        return Response({'msg':'token has been blacklisted'})
    except TokenError:
        return Response({'msg':'token is expired or blacklisted'})

【讨论】：