Django自定义User模型

By liuzhijun, 2014-02-08, 分类: 默认

django

Django1.5自定义用户profile可谓简单很多,编写自己的model类MyUser,MyUser至少要满足如下要求:

  1. 必须有一个整型的主键
  2. 有一个唯一性约束字段,比如username或者email,用来做用户认证
  3. 提供一种方法以“short”和“long"的形式显示user,换种说法就是要实现 get_full_name和get_short_name方法。

一:在project中创建一个account app

django-admin startapp account

二:自定义MyUser

实现自定义User模型最简单的方式就是继承AbstractBaseUser,AbstractBaseUser实现了User的核心功能,你只需对一些额外的细节进行实现就可以了。可以看看AbstractBaseUser的源码:

@python_2_unicode_compatible
class AbstractBaseUser(models.Model):
    password = models.CharField(_('password'), max_length=128)
    last_login = models.DateTimeField(_('last login'), default=timezone.now)

    is_active = True

    REQUIRED_FIELDS = []

    class Meta:
        abstract = True

    def get_username(self):
        "Return the identifying username for this User"
        return getattr(self, self.USERNAME_FIELD)

    def __str__(self):
        return self.get_username()

    def natural_key(self):
        return (self.get_username(),)

    def is_anonymous(self):
        """
        Always returns False. This is a way of comparing User objects to
        anonymous users.
        """
        return False

    def is_authenticated(self):
        """
        Always return True. This is a way to tell if the user has been
        authenticated in templates.
        """
        return True

    def set_password(self, raw_password):
        self.password = make_password(raw_password)

    def check_password(self, raw_password):
        """
        Returns a boolean of whether the raw_password was correct. Handles
        hashing formats behind the scenes.
        """
        def setter(raw_password):
            self.set_password(raw_password)
            self.save(update_fields=["password"])
        return check_password(raw_password, self.password, setter)

    def set_unusable_password(self):
        # Sets a value that will never be a valid hash
        self.password = make_password(None)

    def has_usable_password(self):
        return is_password_usable(self.password)

    def get_full_name(self):
        raise NotImplementedError()

    def get_short_name(self):
        raise NotImplementedError()

AbstractBaseUser只有get_full_name和get_short_name方法没有实现了。接下来我们就通过继承AbstractBaseUser来自定义User模型叫MyUser:

class MyUser(AbstractBaseUser, PermissionsMixin):
    username = models.CharField('username', max_length=30, unique=True,
                                db_index=True)
    email = models.EmailField('email address',max_length=254, unique=True)
    date_of_birth = models.DateField('date of birth', blank=True, null=True)
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['username']

    is_staff = models.BooleanField('staff status', default=False,
        help_text='Designates whether the user can log into this admin '
              'site.')
    is_active = models.BooleanField('active', default=True,
        help_text='Designates whether this user should be treated as '
               'active. Unselect this instead of deleting accounts.')

    def get_full_name(self):
        full_name = '%s %s' % (self.first_name, self.last_name)
        return full_name.strip()

    def get_short_name(self):
        return self.first_name

    objects = MyUserManager()

三:自定义MyUserManager

同时要为MyUser自定义个一个manager,通过继承BaseUserManager,提供creat_user和create_superuser方法。

class MyUserManager(BaseUserManager):
    def create_user(self, username, email=None, password=None, **extra_fields):
        now = timezone.now()
        if not email:
            raise ValueError('The given email must be set')
        email = UserManager.normalize_email(email)
        user = self.model(username=username, email=email,
                           is_staff=False, is_active=True, is_superuser=False,
                           last_login=now, **extra_fields)

        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, username, email, password, **extra_fields):
        u = self.create_user(username, email, password, **extra_fields)
        u.is_staff = True
        u.is_active = True
        u.is_superuser = True
        u.save(using=self._db)
        return u

四:指定AUTH_USER_MODEL

覆盖默认的AUTH_USER_MODEL,在settings.py文件中增加:

AUTH_USER_MODEL = 'user.MyUser'

五:注册MyUser

在account模块下创建admin.py,添加如下代码把MyUser模型注册到admin中:

from django.contrib import admin
from user.models import MyUser
admin.site.register(MyUser)

总结:实现自定义的User模型在Django1.5足够简单方便,根据自己需求继承AbstractBaseUser就可以了。当然如果你想了解更多关于Django 自定义用户模型相关内容,官方文档告诉你更多更好的完好

如果你有什么建议和问题欢迎留言。


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