models.py

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

from .utils import send_activation_email


class UserManager(BaseUserManager):
    use_in_migrations = True

    def _create_user(self, email, password, **extra_fields):
        """
        Creates and saves a User with the given username, email and password.
        """
        if not email:
            raise ValueError('The given email must be set')
        email = self.normalize_email(email)
        user = self.model(email=email, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_user(self, email, password=None, **extra_fields):
        extra_fields.setdefault('is_staff', False)
        extra_fields.setdefault('is_superuser', False)
        return self._create_user(email, password, **extra_fields)

    def create_superuser(self, email, password, **extra_fields):
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser', True)

        if extra_fields.get('is_staff') is not True:
            raise ValueError('Superuser must have is_staff=True.')
        if extra_fields.get('is_superuser') is not True:
            raise ValueError('Superuser must have is_superuser=True.')

        return self._create_user(email, password, **extra_fields)

    def get_or_create_and_notify(self, defaults=dict(), site=None, **kwargs):
        defaults.update(is_active=False)
        user, created = self.get_or_create(defaults=defaults, **kwargs)
        if created:
            send_activation_email(user, site)
        return user, created


class User(AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(_('email address'), max_length=255, unique=True)
    full_name = models.CharField(verbose_name='Full name', max_length=255, blank=True)
    is_staff = models.BooleanField(
        verbose_name='staff status',
        default=False,
        help_text='Designates whether the user can log into this admin site.',
    )
    is_active = models.BooleanField(
        verbose_name='active',
        default=True,
        help_text='Designates whether this user should be treated as active. '
                  'Unselect this instead of deleting accounts.',
    )
    date_joined = models.DateTimeField(verbose_name='date joined', default=timezone.now)

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    # Remove the username field which is no longer used
    username = None

    objects = UserManager()

    class Meta:
        ordering = ['id']

    def __str__(self):
        return self.get_full_name()

    def get_full_name(self):
        return self.full_name.strip()

    def get_short_name(self):
        return self.email

    def email_user(self, subject, message, from_email=None, **kwargs):
        """Send an email to this user."""
        send_mail(subject, message, from_email, [self.email], **kwargs)