user_model.py

from django.db import models
from django.core.mail import send_mail
from django.contrib.auth.models import (
    AbstractBaseUser,
    BaseUserManager,
    PermissionsMixin,
)
from django.utils.translation import ugettext_lazy as _
from django.utils import timezone


class UserManager(BaseUserManager):
    def create_user(self, email, password=None, **kw):
        """
        Creates a user with a given email address and password
        """
        if not email:
            raise ValueError('The given email address must be set')

        u = self.model(
            email=UserManager.normalize_email(email),
            **kw
        )
        u.set_password(password)
        u.save(using=self._db)
        return u

    def create_superuser(self, email, password, **kw):
        """
        Creates a superuser with a given email address and password
        """
        u = self.create_user(email, password, **kw)
        u.is_staff = True
        u.is_active = True
        u.is_superuser = True
        u.save(using=self._db)
        return u


class User(PermissionsMixin, AbstractBaseUser):
    """
    Model for users across the site
    """
    email = models.EmailField(_('email_address'), max_length=255, unique=True)
    first_name = models.CharField(_('first name'), max_length=30, blank=True)
    last_name = models.CharField(_('last name'), max_length=30, blank=True)
    is_active = models.BooleanField(
        _('active'),
        default=True,
        help_text=_('Disable this instead of deleting a user')
    )
    is_staff = models.BooleanField(
        _('staff status'),
        default=False,
        help_text=_('Allow the user access to the admin site')
    )
    date_joined = models.DateTimeField(_('date joined'), default=timezone.now)

    objects = UserManager()

    USERNAME_FIELD = 'email'

    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')

    def get_full_name(self):
        """
        Return the first name and last name
        """
        full_name = '%s %s' % (self.first_name, self.last_name)
        return full_name.strip()

    def get_short_name(self):
        """
        Since the user is identified by their email address return that
        """
        return self.email

    def email_user(self, subject, message, from_email=None):
        """
        Sends an email to the user
        """
        send_mail(subject, message, from_email, [self.email])