无法使用自定义身份验证后端登录

Question

我使用LDAP创建自定义身份验证后端。 我想检查用户是否存在于数据库中，但是将“密码”密码检查委托给LDAP（由于公司政策，密码经常更改）。

使用Django管理界面时，后端工作良好，但是当我使用FormView创建自定义登录页面时，出现以下错误：

Environment:


Request Method: POST
Request URL: http://localhost:8000/accounts/login/

Django Version: 1.7
Python Version: 3.4.2
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'widget_tweaks',
 'defekts',
 'account')
Installed Middleware:
('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')


Traceback:
File "/var/www/django_local/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
  111.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/var/www/django_local/lib/python3.4/site-packages/django/views/generic/base.py" in view
  69.             return self.dispatch(request, *args, **kwargs)
File "/var/www/django_local/lib/python3.4/site-packages/django/views/generic/base.py" in dispatch
  87.         return handler(request, *args, **kwargs)
File "/var/www/django_local/lib/python3.4/site-packages/django/views/generic/edit.py" in post
  173.             return self.form_valid(form)
File "/var/www/django_local/local/account/views.py" in form_valid
  17.         auth_login(form.request, user)
File "/var/www/django_local/lib/python3.4/site-packages/django/contrib/auth/__init__.py" in login
  86.     if SESSION_KEY in request.session:

Exception Type: AttributeError at /accounts/login/
Exception Value: 'NoneType' object has no attribute 'session'

settings.py

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

views.py

from django.contrib.messages.views import SuccessMessageMixin, messages
from django.core.urlresolvers import reverse, reverse_lazy
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth import login as auth_login, logout as auth_logout
from django.views.generic import FormView

# Create your views here.

class LoginView(FormView):
    form_class = AuthenticationForm
    template_name = 'account/login.html'
    success_url = reverse_lazy("defekts:index")

    def form_valid(self, form):
        user = form.get_user()
        auth_login(form.request, user)
        return super(LoginView, self).form_valid(form)

account / LDAPBackend / init .py

import ldap
from django.contrib.auth.models import User, check_password
from django.contrib.auth import get_user_model

class LDAPBackend(object):

    def authenticate(self, username=None, password=None):

        if username is None:
            return None

        try:
            # user = User.objects.get(username=username)
            user = get_user_model().objects.get(username=username)
        except User.DoesNotExist:
            # TODO: Raise error
            return None

        try:
            connection = ldap.initialize("ldap://example.com")
            connection.protocol_version = ldap.VERSION3
            connection.simple_bind_s("example.com\\"+username, password)
        except ldap.INVALID_CREDENTIALS:
            return None
        except ldap.SERVER_DOWN:
            # TODO: Return error instead of none
            return None

        return user

    def get_user(self, userid):
        try:
            return User.objects.get(pk=userid)
        except User.DoesNotExist:
            return None

我错过了什么？ 提前致谢。

Answer 1

调用auth_login ，请执行self.request而不是form.request 。