Django的认证（）返回永诺无 [英] django authenticate() allways returns None

问题描述

我想创建一个自定义登录表单进行身份验证对远程服务器，所以我必须创建一个自定义登录表单。我创建了一个与用户
用户名='TEST3，密码=测试在Django的壳。当我尝试使用身份验证功能，我拿到永诺无。当我试着使用相同的用户名和密码登录，我可以登录。我可以排除可能存在以下错误：
- django.contrib.auth.backends.ModelBackend'在MIDDLEWARE_CLASSES所示：

I'm trying to create a custom login-form for authenticating against a remote-server, so I have to create a custom login-form. I have created a user with username='test3', password='test' in the django-shell. When I try to use the authenticate-function, I allways get None. When I try to login with same username and password, I can login. I can exclude the following possible errors: - 'django.contrib.auth.backends.ModelBackend' is listed in MIDDLEWARE_CLASSES:

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.auth.backends.ModelBackend',
    )

• 密码存储哈希（我使用SQLite浏览器检查吧）


• User.objects.get（用户名='TEST3'）。check_password（'测试'）
  返回True


• 我没syncdb，迁移和激活认证后端后makemigrations



我使用的Django 1.8
原则上，我只需要会话数据，因为用户存储在不同的地方。

I'm using django 1.8 In principle, I only need the session-data because the users are stored in a different place.

今天早上，我才意识到，该问题不仅解决部分：
- 身份验证（）的作品在shell
- 在我看来，我可以检索用户，并成功地检查其密码
但话又说回来，当我尝试使用身份验证（） - 函数在我看来，我得到一个无类型对象。我甚至删除了数据库，但行为仍然是相同的。
我的settings.py：

This morning, I realized, that the problem is only solved partly: - authenticate() works in the shell - in my view I can retrieve the user and successfully check its password But then again, when I try to use the authenticate()-function in my view, I get a None-type object. I even deleted the database but the behaviour is still the same. My settings.py:

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    #'django.contrib.auth.middleware.RemoteUserMiddleware', 
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.contrib.staticfiles.finders.FileSystemFinder',
)

AUTHENTICATION_BACKENDS = (
    'django.contrib.auth.backends.ModelBackend',                           
    #'django.contrib.auth.backends.RemoteUserBackend',
    )

的意见：
从django.contrib.auth.models导入用户
从django.contrib.auth进口身份验证

views: from django.contrib.auth.models import User from django.contrib.auth import authenticate

def authentifizieren(request):
    """
    """
    if request.method == 'POST':
        uname = request.POST['username']
        passwd = request.POST['password']
        dbuser = User.objects.get(username=uname)
        dbuvalid=dbuser.check_password(passwd)
        auser = authenticate(username=uname, password=passwd)
        print('***************************************', dbuser,dbuvalid)
        print('***************************************', auser)
    if (auser != None):
        login(request, auser)
    return redirect('/startseite')

输出：

*************************************** test True
*************************************** None

我也很难codeD上的用户名/密码字符串exlude编码相关的问题，但没有成功。

I also hardcoded the user/password-strings to exlude an encoding-related problem, but no success.

推荐答案

<一个href=\"https://docs.djangoproject.com/en/1.8/ref/contrib/auth/#django.contrib.auth.backends.ModelBackend\"相对=nofollow> django.contrib.auth.backends.ModelBackend 是一个认证后端，而不是一个中间件类。

django.contrib.auth.backends.ModelBackend is an authentication backend and not a middleware class.

您应该删除从 MIDDLEWARE_CLASSES 设置这个认证后端项目。

You should remove this authentication backend entry from MIDDLEWARE_CLASSES settings.

此外，您还需要定义 AUTHENTICATION_BACKENDS 来类似如下：

Also, you need to define AUTHENTICATION_BACKENDS to something like below:

# Authentication backends
AUTHENTICATION_BACKENDS = (
        'django.contrib.auth.backends.ModelBackend', # default
        ..   # any other authentication backends
    )

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