TemplateResponseMixin 需要“template_name”的定义或“get_template_names()”的实现 - Django 2.1

Question

I\xc2\xb4m 尝试使用 Django 登录没有密码的用户，到目前为止我已经创建了这个：

\n

无密码.py

\n

class PasswordlessAuthBackend(ModelBackend):\n   \n    def authenticate(self, username=None):\n        try:\n            return User.objects.get(username=username)\n        except User.DoesNotExist:\n            return None\n\n    def get_user(self, user_id):\n        try:\n            return User.objects.get(pk=user_id)\n        except User.DoesNotExist:\n            return None\n

\n

视图.py

\n

from .Nopassword import PasswordlessAuthBackend\nuser = User()\np = PasswordlessAuthBackend()\nuser.username = p.get_user(user_id=None)\nuser = p.authenticate(username=user.username)\n\n\ndef home(request):\n    login(request, user)\n

\n

问题是，当我运行 web 应用程序时，我\xc2\xb4m 收到此错误：

\n

Traceback (most recent call last):\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner\n    response = get_response(request)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/core/handlers/base.py", line 128, in _get_response\n    response = self.process_exception_by_middleware(e, request)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/core/handlers/base.py", line 126, in _get_response\n    response = wrapped_callback(request, *callback_args, **callback_kwargs)\n  File "/home/bohosul02/misitio/gfgauth/views.py", line 29, in home\n    login(request, user)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/contrib/auth/views.py", line 125, in login\n    )(request)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/generic/base.py", line 69, in view\n    return self.dispatch(request, *args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper\n    return bound_func(*args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper\n    return view(request, *args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func\n    return func.__get__(self, type(self))(*args2, **kwargs2)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper\n    return bound_func(*args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 142, in _wrapped_view\n    response = view_func(request, *args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func\n    return func.__get__(self, type(self))(*args2, **kwargs2)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 62, in _wrapper\n    return bound_func(*args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func\n    response = view_func(request, *args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/utils/decorators.py", line 58, in bound_func\n    return func.__get__(self, type(self))(*args2, **kwargs2)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/contrib/auth/views.py", line 66, in dispatch\n    return super().dispatch(request, *args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/generic/base.py", line 89, in dispatch\n    return handler(request, *args, **kwargs)\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/generic/edit.py", line 133, in get\n    return self.render_to_response(self.get_context_data())\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/generic/base.py", line 126, in render_to_response\n    template=self.get_template_names(),\n  File "/home/bohosul02/.virtualenvs/myproject/lib/python3.6/site-packages/django/views/generic/base.py", line 139, in get_template_names\n    "TemplateResponseMixin requires either a definition of "\ndjango.core.exceptions.ImproperlyConfigured: TemplateResponseMixin requires either a definition of 'template_name' or an implementation of 'get_template_names()'\n

\n

我搜索了有关此错误的信息，但我发现当所有人遇到此错误时，这是​​因为他们在views.py文件中创建了一个类。

\n

我该如何解决这个问题？

\n

姜戈版本：2.1

\n

Answer 1

如果您想在没有密码的情况下登录用户，则必须使用基于类的视图。如果您想在函数（def home）中执行此操作，则\xc2\xb4s将不起作用，正确的方法是\xc2\xb4s创建一个类（class home）。

\n

请记住，一旦创建了模板，class home您就必须设置一个 template_name。

\n

from django.views.generic import View\n\nclass Home(View)\n   template_name = 'path/to/file.html'\n

\n