Django用户验证框架

一  分析源码 User

 

Django的标准库存放在 django.contrib 包中。每个子包都是一个独立的附加功能包。

这些子包一般是互相独立的，不过有些django.contrib子包需要依赖其他子包，其中django.contrib.auth 为Django的用户验证框架

1.  导入方法

from django.contrib.auth.models import User

2.  分析User继承链

User --> AbstractUser  --> (AbstractBaseUser, PermissionsMixin)

UserManger  -->  BaseUserManager

其中类AbstractUser内部中 username、first_name、last_name、email、is_staff、is_active、objects = UserManager()

类UserManager内部中 create_user()和create_superuser()

类AbstractBaseUser内部中 password、last_login、is_authenticated、set_password()

3.  小结

模仿 AbstractUser继承 AbstractBaseUser，调用UserManager()，实现账号定制

二  账号定制

# 用来创建用户
class MyUserManager(BaseUserManager):
    def create_user(self, email, name, password=None):
        if not email:
            raise ValueError('Users must have an email address')
        user = self.model(
            email=self.normalize_email(email),
            name=name,
        )
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, name, password):
        user = self.create_user(
            email,
            password=password,
            name=name,
        )
        user.is_admin = True
        user.save(using=self._db)
        return user

# 定制账号基本信息
class Account(AbstractBaseUser):

    email = models.EmailField(
        verbose_name='email address',
        max_length=255,
        unique=True,
    )
    name = models.CharField(max_length=32)
    role = models.ForeignKey("Role", blank=True, null=True)
    customer = models.OneToOneField("Customer", blank=True, null=True)

    is_active = models.BooleanField(default=True)
    is_admin = models.BooleanField(default=False)

    objects = MyUserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['name']

    # 其他基本信息......

最后在项目配置里启动该定制账号库表  AUTH_USER_MODEL = 'app.Account'

参考链接  https://docs.djangoproject.com/en/1.11/topics/auth/customizing/

三  登录与退出

1.  导入方法

from django.contrib.auth.decorators import login_required

from django.contrib.auth import authenticate, login, logout

2.  分析模块

@login_required 验证需要登录的页面，否则跳转找配置里的登录页面 LOGIN_URL = '/login/'

authenticate(username=username, password=password)，认证通过返回user对象，否则None

login(request, user) 写入登录sessioin

logout(request) 清除登录session

3.3  示例

from django.shortcuts import render, redirect
from django.contrib.auth.decorators import login_required
from django.contrib.auth import authenticate, login, logout

@login_required
def dashboard(request):
    return render(request, 'dashboard.html')

def account_login(request):
    if request.method == "POST":
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = authenticate(username=username, password=password)
        if user:
            login(request, user)
            return redirect(request.GET.get('next') or '/dashboard/')
    return render(request, 'login.html')

def account_logout(request):
    logout(request)
    return redirect('/login/')