django搭建一个问答社区（三）

创建Django的用户注册和登录

python manage.py startapp authentication
创建一个用于用户的APP应用
manager是Django提供数据库查询操作的接口，自定义manager可以实现想要的任何数据操作。
通过继承BaseUserManger类，实现两个方法
create_user(): 创建普通用户
create_superuser(): 创建超级用户

from django.contrib.auth.models import BaseUserManager
# Create your models here.

class UserManager(BaseUserManager):

    def create_user(self, username, email, password, **kwargs):
        '''
        创建用户
        '''
        if not email:
            raise ValueError("Users must have avalid email!!")
        user = self.model(
            username = username,
            email = self.normalize_email(email),
        )
        user.set_password(password)
        user.save()
        return user
        
    def create_superuser(self, username, email, password, **kwargs):
        """
        创建超级管理用户
        """
        user = self.create_user(username, email, password)
        user.is_admin = True
        user.is_superuser = True
        user.is_staff = True
        user.save()

        return user

编辑用户的model

from django.db import models
from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin

from .manager import UserManager


class User(AbstractBaseUser, PermissionsMixin):

    email = models.EmailField(unique=True)
    username = models.CharField(max_length=100, unique=True)
    is_admin = models.BooleanField(default=False)
    is_staff = models.BooleanField(default=False)
    is_active = models.BooleanField(default=True)

    objects = UserManager()
    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email', ]
    class Meta():
        verbose_name = 'user'
        verbose_name_plural = 'users'

    def get_userid(self):
        return User.objects.get(username=self.username).user_id

在settings配置中配置使用重写的User

AUTH_USER_MODEL = 'app.youruser'
app: 注册的用户应用，其中需要确保APP已经在installed_apps中添加了
youruser: 是重写的User模型

HINT: Add or change a related_name argument to the definition for 'User.user_permissions' or 'User.user_permissions'.

解决办法： AUTH_USER_MODEL = '项目名称.User'