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MongoEngine - 如何自定义用户模型/自定义后端进行身份验证（）

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SUMMARY

How do I use a custom User model and a custom authentication backend (to allow for email / password authentication) with Django + MongoEngine? （自定义后端甚至是必需的吗？...即，在使用MongoEngine进行身份验证时使用电子邮件作为用户名 . ）

Is there any documentation with a straight-forward (and complete!) example of using a custom user object while using Mongo as the primary datastore when authenticating in Django? （Postgres有更清晰，更全面的文档...）

DETAIL

MongoEngine似乎只给你两种版本的身份验证 - "Classic"（又名'mongoengine.django.auth.MongoEngineBackend ') way...OR...the 312455 (aka ' django.contrib.auth.backends.ModelBackend ') way--both of which more or less succinctly outlined in Nicolas Cortot'这里回答了另一个问题：

Python-Social-Auth fails with mongoEngine (Django)

这两种身份验证技术都允许您访问类似于Django的AbstractBaseUser类的authenticate（）方法 - 一种依赖于check_password函数的方法 . 但是，一分钟你使用所谓的"Custom User Model"身份验证风格（如上面的链接所述）...然后将其与自定义后端配对（为了使用电子邮件用于用户名）...你遇到了麻烦无法访问典型的authenticate（）函数 .

例如，像这样......

accounts.models.py

# ...with postgres, I'd subclass AbstractBaseUser...but with Mongo...(?)

from django.conf import settings
from mongoengine.fields import EmailField, BooleanField 
from mongoengine.django.auth import User

class MyUser(User):

    email = EmailField(max_length=254, unique=True)
    is_active = BooleanField(default=True)
    is_admin = BooleanField(default=False)

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ''

    ...

my_custom_backend.py

# ...is a custom backend even necessary to use email for authentication instead of username?

from django.conf import settings
from django.contrib.auth.models import check_password
#from mongoengine.django.auth import check_password
#from django.contrib.auth.hashers import check_password
from models import MyUser

    class EmailAuthBackend(object):

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

# ...uh oh, since I'm NOT using one of the usual backends with a pre-existing authenticate()
# method, there ain't a native check_password() function available. Means I have to hash the
# password, etc.

所以，看起来，我不得不编写自己的check_password函数 . 为了获得通常在PostgreSQL身份验证中找到的AbstractBaseUser类所固有的所有优点，我非常干 .

我在这里完全糊涂了吗？ ...即，如果我想在使用MongoEngine时使用电子邮件而不是用户名进行身份验证，那么实际上完全没必要使用自定义后端吗？

我觉得我可能对Django在认证方面如何与MongoEngine一起工作有一个根本的误解，关于我如何在该过程中建模并调用自定义用户对象/我特定的MongoEngine用户对象的子类...

因为 - 就像现在一样 - 我在浏览器中收到“ 'AnonymousUser' object has no attribute 'backend' ”错误消息 . 我还注意到这个问题有时会出于意料之外的原因 - 即：authenticate（）方法可能需要散列密码，或者因为登录（电子邮件）太长了......？对于后一种情况可能是这种情况的更多情况，请参阅：

Django Register Form 'AnonymousUser' object has no attribute 'backend'

settings.py

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.admin',
    'mongoengine.django.mongo_auth',
    'accounts',
)

AUTHENTICATION_BACKENDS = (
    'mongoengine.django.auth.MongoEngineBackend',
    #'accounts.my_custom_backend.EmailAuthBackend',
    #'django.contrib.auth.backends.ModelBackend',
)

AUTH_USER_MODEL = 'mongo_auth.MongoUser'
MONGOENGINE_USER_DOCUMENT = 'accounts.models.User'

accounts.views.py

from django.contrib.auth import login as django_login
from my_custom_backend import EmailAuthBackend
from forms import AuthenticationForm

def login(request):

    form = AuthenticationForm(data=request.POST)
    if form.is_valid():
        try:
            backend = EmailAuthBackend()
            user = backend.authenticate(email=request.POST['email'], password=request.POST['password'])
            django_login(request, user)
            return redirect('/')
        except DoesNotExist:
            return HttpResponse('user does not exist')
    else:
        form = AuthenticationForm()

    return render_to_response('accounts/login.html',
       { 'form': form },
       context_instance=RequestContext(request))
django authentication mongoengine custom-backend

2 回答

  • 2

    嗯，看起来最好的行动方案是不要将Django的用户移交给Mongo进行身份验证开始...通过Twitter获得这个金块：

    @blogblimp我的简短回答：尽量避免用MongoDB替换Django用户模型 . 你失去了所有的Django权力并且失去了MongoDB 's speed. Seriously, user relates to everything and MongoDB isn' t关系 .

    • Daniel Roy Greenfeld（@pydanny）January 20, 2014
      所以：我很酷 . Mongo仍然是Django世界的二等公民 .
    回复于
  • 1

    也许我有点晚了，但我可以使用mongoengine用户django身份验证来完成电子邮件身份验证的任务，这是我的工作方式：

    from django.contrib.auth import authenticate, login as do_login, logout as do_logout

def login(request):

    data = extractDataFromPost(request)
    email = data["email"]
    password = data["password"]

    try: 
        user = User.objects.get(username=email)
        if user.check_password(password):
            user.backend = 'mongoengine.django.auth.MongoEngineBackend'
            user = authenticate(username=email, password=password)
            do_login(request, user)
            request.session.set_expiry(3600000) # 1 hour timeout
            return jsonResponse(serializeUser(user)) 
        else:
            result = {'error':True, 'message':'Invalid credentials'}
            return jsonResponse(result) 
    except User.DoesNotExist:
        result = {'error':True, 'message':'Invalid credentials'}
        return jsonResponse(result)
    回复于

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