text: from django.db import models
  from django.contrib.auth.models import AbstractBaseUser,BaseUserManager, \
                                          PermissionsMixin
  
  
  class UserManager(BaseUserManager):
  
      def create_user(self, email, password=None, **extra_fields):
          """ create and save a new user"""
          if not email:
              raise ValueError('user must have an email address')
          user= self.model(email=self.normalize_email(email), **extra_fields)
          user.set_password(password)
          user.save(using=self._db)
  
          return user
      
      def create_superuser(self, email, password):
          """ creating and saving the superuser"""
          user=self.create_user(email, password)
          user.is_staff=True
          user.is_superuser= True
          user.save(using=self._db)
          
          return user
  
  
  class User(AbstractBaseUser, PermissionsMixin ):
      """ Custom user model that suppors using email instead of username"""
      email=models.EmailField(max_length=255, unique=True)
      name=models.CharField(max_length=255)
      is_active=models.BooleanField(default=True)
      is_staff=models.BooleanField(default=True)
   
      objects = UserManager()
  
      USERNAME_FIELD= 'email'