permission() for permission in self.permission_classes -> TypeError: 'str' object is not callable

Question

有人知道我为什么会收到此错误吗？我将默认权限设置为 IsAuthenticated。只有register有AllowAny，允许用户注册。

Not Found: /
[21/Feb/2022 21:43:06] "GET / HTTP/1.1" 404 2278
Not Found: /account
[21/Feb/2022 21:43:11] "GET /account HTTP/1.1" 404 2317
Internal Server Error: /account/register
Traceback (most recent call last):
\venv\lib\site-packages\rest_framework\views.py", line 278, in <listcomp>
    return [permission() for permission in self.permission_classes]
TypeError: 'str' object is not callable
[21/Feb/2022 21:43:14] "GET /account/register HTTP/1.1" 500 106055

我的views.pyclass:

@api_view(['POST'])
@permission_classes(['AllowAny'])
def registration_view(request):
    serializer = RegistrationSerializer(data=request.data)
    data = {}
    if serializer.is_valid():
        account = serializer.save()
        data['response'] = "successfully registered a new user."
        data['email'] = account.email
        data['username'] = account.username
    else:
        data = serializer.errors
    return Response(data)

我在 settings.py 文件中使用 SessionAuthentication 和 IsAuthenticated 作为默认身份验证和权限。

CustomUser 模型只是继承自 AbstractUser。没有添加。

Answer 1

您不能将权限类作为字符串传递，而是作为对类的引用传递，因此：

from rest_framework.permissions import <strong>AllowAny</strong>

@api_view(['POST'])
@permission_classes([<strong>AllowAny</strong>])
def registration_view(request):
    # …

但您无需指定 AllowAny，因为它允许任何请求。您可以使用以下方式实现视图：

@api_view(['POST'])
def registration_view(request):
    # …

permission() for permission in self.permission_classes -> TypeError: 'str' object is not callable

permission() for permission in self.permission_classes -> TypeError: 'str' object is not callable

python

django

django-rest-framework