from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager

from django.db import models

class UserManager(BaseUserManager):

    def _create_user(self, username, **extra_fields):

        user = self.model(username=username, **extra_fields)

        user.save(using=self._db)

        return user

    def create_superuser(self, username=None, **extra_fields):

        return self._create_user(username, **extra_fields)

class NoPasswordUser(AbstractBaseUser):

    password = None

    last_login = None

    username = models.CharField(max_length=50, unique=True)

    USERNAME_FIELD = "username"

    objects = UserManager()