custom_user.py

# models.py
class User(AbstractBaseUser, PermissionsMixin):
    username_validator = UnicodeUsernameValidator()

    id = models.UUIDField(verbose_name=_('ID'), primary_key=True, default=uuid.uuid4, editable=False)
    username = models.CharField(
        _('Usuário'),
        max_length=150,
        unique=True,
        help_text=_('Obrigatório. 150 caracteres ou menos. Letras, números e os símbolos @/./+/-/_ são permitidos.'),
        validators=[username_validator],
        error_messages={
            'unique': _("Já existe um usuário com este username."),
        },
        blank=True, null=True
    )
    full_name = models.CharField(verbose_name=_('Nome'), max_length=150)
    address = models.CharField(verbose_name=_('Endereço'), max_length=200, blank=True, default='')
    area = models.CharField(verbose_name=_('Bairro'), max_length=50, blank=True, default='')
    state = models.CharField(verbose_name=_('Estado'), max_length=2, choices=STATE_CHOICES, blank=True, default='')
    city = models.CharField(verbose_name=_('Cidade'), max_length=50, blank=True, default='')
    zip_code = models.CharField(verbose_name=_('CEP'), max_length=10, blank=True, default='')
    complement = models.CharField(verbose_name=_('Complemento'), max_length=100, blank=True, default='')
    cell_phone = models.CharField(verbose_name=_('Celular'), max_length=14, blank=True, default='')
    cpf = models.CharField(verbose_name=_('CPF'), max_length=14, blank=True, null=True, unique=True)
    rg = models.CharField(verbose_name=_('RG'), max_length=50, blank=True, null=True, unique=True)
    birthday = models.DateField(verbose_name=_('Nascimento'), blank=True, null=True)
    email = models.EmailField(verbose_name=_('E-mail'), unique=True)
    photo = models.ImageField(verbose_name=_('Foto'), upload_to='photos', blank=True, default='')
    is_staff = models.BooleanField(verbose_name=_('Staff'), default=False, help_text=_('Pode logar no Admin'))
    is_active = models.BooleanField(
        verbose_name=_("Ativo"),
        default=True,
        help_text=_('Desmarque esta opção em vez de deletar o usuário')
    )
    date_joined = models.DateTimeField(verbose_name=_('Data de cadastro'), default=timezone.now, editable=False)

    objects = UserManager()

    EMAIL_FIELD = 'email'
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['full_name']

    class Meta:
        verbose_name = _('Usuário')
        verbose_name_plural = _('Usuários')
        permissions = [
            ('jn_can_access_courses', _('Pode acessar os cursos')),
            ('jn_can_access_articles', _('Pode acessar os artigos')),
            ('jn_can_access_coaches', _('Pode contratar os Coaches')),
        ]
        swappable = "AUTH_USER_MODEL"

    def get_username(self):
        return self.username

    def get_full_name(self):
        return self.full_name

    def get_short_name(self):
        short_name = self.full_name.split()[0] + ' ' + self.full_name.split()[-1]
        return short_name.strip()

    def email_user(self, subject, message, from_email=None, **kwargs):
        send_mail(subject, message, from_email, [self.email], **kwargs)

    @property
    def pk(self):
        return self.id.urn[9:]

# managers.py
class UserManager(BaseUserManager):
    use_in_migrations = True

    def _create_user(self, username, email, password, **extra_fields):
        """
        Creates and saves a User with the given email and password.
        """
        if not email:
            raise ValueError(_('O e-mail é obrigatório'))

        if username is None:
            username = get_unique_username(email)

        email = self.normalize_email(email)
        user = self.model(username=username, email=email, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

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

    def create_superuser(self, email, password, username=None, **extra_fields):
        extra_fields.setdefault('is_superuser', True)
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_active', True)

        if extra_fields.get('is_superuser') is not True:
            raise ValueError(_('Super usuário precisa ter is_superuser=True'))

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

# views.py
# Essa views foi só para testar a persistência
def add_user(request):
    if request.method == 'POST':
        form = UserForm(request.POST)
        if form.is_valid():
            form.save()
    form = UserForm()
    return render(request, 'add_user.html', {'form': form})