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


class UserManager(BaseUserManager):
 def create_user(self, email, password=None):
  """
  Creates and saves a User with the given email and password.
  """
  if not email:
   raise ValueError('Users must have an email address')

  user = self.model(
   email=self.normalize_email(email),
  )

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

 def create_superuser(self, email, password):
  """
  Creates and saves a superuser with the given email and password.
  """
  user = self.create_user(
   email,
   password=password,
  )
  user.is_staff = True
  user.is_superuser = True
  user.save(using=self._db)
  return user


class CustomUser(AbstractBaseUser, PermissionsMixin):
 name = models.CharField(max_length=50, default='Anonymous')
 email = models.EmailField(max_length=100, unique=True)

 username = None

 USERNAME_FIELD = 'email'
 REQUIRED_FIELDS = []

 session_token = models.CharField(max_length=10, default=0)

 active = models.BooleanField(default=True)
 # a admin user; non super-user
 is_staff = models.BooleanField(default=False)
 is_superuser = models.BooleanField(default=False) # a superuser

 created_at = models.DateTimeField(
  auto_now_add=True, blank=True, null=True)
 updated_at = models.DateTimeField(auto_now=True)

 objects = UserManager()

AUTH_USER_MODEL = 'users.CustomUser'

py manage.py makemigrations
py manage.py migrate
py manage.py createsuperuser

admin.site.register(CustomUser)