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python - 我得到“模块”对象在 Django Rest Framework 中不可调用

问题描述

我正在尝试为 api 学习 django rest 框架。我正在关注文档并检查了所有导入，但我收到了 typeerror: 'module' object is not callable

视图.py

from rest_framework import viewsets
from .serializer import CategorySerializer
from .models import CategoryModel

class FirstView(viewsets.ModelViewSet):
    queryset = CategoryModel.objects.all().order_by('name')
    serializer_class = CategorySerializer

序列化程序.py

from rest_framework import serializers

from .models import CategoryModel

class CategorySerializer(serializers.ModelSerializer):
    class Meta:
        model = CategoryModel
        field = ['name', 'description']

网址.py

from django.urls import path, include

from rest_framework.routers import DefaultRouter
from . import views

router = DefaultRouter()

router.register(r'', views.FirstView)

urlpatterns = [
    path('', include(router.urls))
]

错误

Internal Server Error: /api/category/
Traceback (most recent call last):
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 492, in dispatch
    request = self.initialize_request(request, *args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\viewsets.py", line 146, in initialize_request
    request = super().initialize_request(request, *args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 394, in initialize_request
    authenticators=self.get_authenticators(),
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 272, in get_authenticators
    return [auth() for auth in self.authentication_classes]
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 272, in <listcomp>
    return [auth() for auth in self.authentication_classes]
TypeError: 'module' object is not callable

这是用于 DjangoRestFramework 的 settings.py

设置.py

REST_FRAMEWORK = {
     'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.BasicAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authtoken',
    ],
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
    ]
}

标签： pythondjangodjango-rest-frameworkdjango-serializerdjango-rest-viewsets

解决方案

您的设置配置错误。手册说：

令牌认证

..

要使用该TokenAuthentication方案，您需要将身份验证类配置为包含TokenAuthentication，并另外包含rest_framework.authtoken在您的INSTALLED_APPS设置中：

INSTALLED_APPS = [
    ...
    'rest_framework.authtoken'
]

rest_framework.authtoken是要投入的INSTALLED_APPS，不是DEFAULT_AUTHENTICATION_CLASSES。不过，我不完全确定要放入文档中暗示的内容DEFAULT_AUTHENTICATION_CLASSES；最有可能的：

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        ...,
        'rest_framework.authentication.TokenAuthentication'
    ],
    ...
}

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