Django 1.7多站点用户模型

Question

我想提供一个Django应用程序,它通过单个数据库但不同的用户集为多个网站提供服务.像博客应用程序一样思考,它将由具有不同主题的多个域使用,但通过向模型添加站点字段来使用相同的数据库.

我使用Django的SitesFramework来完成这项工作.但问题是,我无法将不同网站的用户模型分开.我想将相同的用户模型与每个站点唯一的站点字段和电子邮件字段一起使用.

我试图AbstractUser像这样扩展模型:

from django.contrib.auth.models import AbstractUser
from django.contrib.sites.models import Site
from django.contrib.sites.managers import CurrentSiteManager

class Member(AbstractUser):
    username = None
    site = models.ForeignKey(Site)

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    on_site = CurrentSiteManager()

    class Meta:
        unique_together = ('site', 'email')

但是给出了这个错误: 'Member.email' must be unique because it is named as the 'USERNAME_FIELD'.

这个问题的最佳做法是什么？

Answer 1

我希望这种方法对您有帮助：

1）保存前输入用户名：

from django.db import models
from django.contrib.auth.models import AbstractUser
from django.contrib.sites.models import Site
from django.contrib.sites.managers import CurrentSiteManager

class Member(AbstractUser):
    site = models.ForeignKey(Site)
    on_site = CurrentSiteManager()

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = []

    class Meta:
        unique_together = ('site', 'email')

from django.db.models.signals import pre_save
from django.dispatch import receiver

@receiver(pre_save, sender=Member)
def compose_username(sender, instance, **kwargs):
    instance.username = "{0}__{1}".format( instance.email, instance.site_id ) 

2）然后在自定义身份验证后端中覆盖ModelBackend：

from django.contrib.auth.backends import ModelBackend
from django.contrib.auth import get_user_model

class MyModelBackend(ModelBackend):

    def authenticate(self, username=None, password=None, **kwargs):
        UserModel = get_user_model()
        site = kwargs.get('site')
        identifier = "{0}__{1}".format( username, site )
        try:
            user = UserModel.objects.get(username=identifier)
            if user.check_password(password):
                return user
        except UserModel.DoesNotExist:
            # Run the default password hasher once to reduce the timing
            # difference between an existing and a non-existing user (#20760).
            UserModel().set_password(password)

3）请记住在设置上设置自定义后端：

AUTH_USER_MODEL='s1.Member'
SITE_ID = 1
AUTHENTICATION_BACKENDS = ( 'MyApp.MyModule.MyModelBackend',)

4）认证时包括站点：

>>> from s1.models import Member as M
>>> m1 = M()
>>> m1.site_id = 1
>>> m1.email = 'peter@hello.com'
>>> m1.save()
>>> m1.set_password('hi')
>>> m1.save()
>>> 
>>> from django.contrib.auth import authenticate, login
>>> u=authenticate(username='peter@hello.com', password='hi', site=1)
>>> u
<Member: peter@hello.com_at_1>
>>>