CustomUserModel

from django.db import models
from django.contrib.auth.models import ( AbstractUser, BaseUserManager )

class CustomUserModelManager(BaseUserManager):
    pass

class CustomUser(AbstractUser):

    username = models.CharField(max_length=150, unique=True)
    password = models.CharField(default='', max_length=150)
    email = models.EmailField(max_length=254)
    first_name = models.CharField(max_length=150)
    last_name = models.CharField(max_length=150)
    is_active = models.BooleanField(default=True)
    is_staff = models.BooleanField(default=False)
    is_admin = models.BooleanField(default=False)
    timestamp = models.DateTimeField(auto_now_add=True)

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['password', 'email']

    def __unicode__(self):
        return self.username

    def __str__(self):
        return self.username

    @property
    def is_active(self):
        return self.is_active

    @property
    def is_staff(self):
        return self.is_staff

    @property
    def is_admin(self):
        return self.is_admin