python - 类型错误 : get() takes 1 positional argument but 2 were given

Question

我正在构建和库存 Web 应用程序，但我遇到了这个错误。我正在尝试从 token 中获取用户名以显示自定义问候消息并显示用户以某人身份登录。

这是我的 Views.py，它以登录用户身份从 localStorage 获取 token :

class UserDetails(APIView):

    def post(self, request):
        serializer = UserAccountTokenSendSerializer(data=request.data)
        global token
        if serializer.is_valid():
            token = serializer.validated_data['token']
        return Response(serializer.data)

    def get(self):
        user_id =  Token.objects.get(key=token).user_id
        details = User.objects.get(id=user_id)
        serializer = UserDetails(details, many=False)
        return Response(serializer.data)

class UserDetails(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = (
            'username',
        )

这是我的 Urls.py:

urlpatterns = [
    path('get-user-token/', views.UserDetails.as_view()),
    path('get-user-details/', views.UserDetails.as_view()),
]

这是我得到的错误:

  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
TypeError: get() takes 1 positional argument but 2 were given
[15/Jun/2022 19:34:59] "GET /api/v1/get-user-details/ HTTP/1.1" 500 82239

Answer 1

.get(…) method ^[Django-doc]也接受一个 request 参数，即使你不使用它，所以:

class UserDetails(APIView):

    # …

    def get(self<strong>, request</strong>):
        # …
        pass

我强烈建议不要将token设为全局变量。同一个网络服务器可以用于另一个未通过(正确)身份验证的用户。看看 Authentication section of the Django REST framework documentation有关如何验证和检查凭据的更多信息。

---

Note: In Django, class-based views (CBV) often have a …View suffix, to avoid a clash with the model names. Therefore you might consider renaming the view class to UserDetailsView, instead of UserDetails.