rest framework錯誤筆記——AssertionError: Cannot apply DjangoModelPermissionsOrAnonReadOnly on a view that does not set `.queryset` or have a `.get_queryset()` method.

用到@api_view裝飾器時，訪問路由查看api數據時，報錯：

AssertionError: Cannot apply DjangoModelPermissionsOrAnonReadOnly on a view that does not set `.queryset` or have a `.get_queryset()` method.

按照官網教程（http://www.django-rest-framework.org/），在settings文件里寫入的設置為

REST_FRAMEWORK = {
    # Use Django's standard `django.contrib.auth` permissions,
    # or allow read-only access for unauthenticated users.
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
    ]
}

 將設置里的'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'一句刪除，重啟項目再次訪問，不在報錯。

　　注：'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'適用於添加身份驗證和權限以后。