class PhoneModel(models.Model):
    phone = models.CharField(validators=[phone_regex], max_length=13, blank=True)
    is_verified = models.BooleanField(blank=False, default=False)
    counter = models.IntegerField(default=0, blank=False)

    def __str__(self):
        return f'{self.phone}'


class UserRoles(models.Model):
    is_client = models.BooleanField(default=False)
    is_specialist = models.BooleanField(default=False)


class ClientUser(AbstractBaseUser):
    role = models.OneToOneField(UserRoles, on_delete=models.CASCADE, primary_key=True)
    phone = models.OneToOneField(PhoneModel, on_delete=models.CASCADE)