Telegram – Django Model email field is required even after i set it as null=True and blank=True

I have a problem with email field in django model. I have set it null True and blank True but this couldn’t prevent admin user forms or any other web forms where i include email, to not require email if sumitted blank. Seems it is related to overriden email field in my custom user model but I am new to Django, so I don’t have any idea where to pay attention to troubleshoot.

here is my custom user model with its manager..

`from django.contrib.auth.models import AbstractUser
from django.db import models
from django.utils.translation import gettext_lazy as _

from .managers import UserManager

class User(AbstractUser):

GENDER_CHOICES = (
    ('male', _('Male')),
    ('female', _('Female')),
    ('not_set', _('Not set')),
)

email = models.CharField(_('Email'), max_length=30, unique=True, blank=True, null=True)
phone = models.PositiveBigIntegerField(_('Phone number'), unique=True, null=True, blank=True)
telegram = models.BigIntegerField(_('Telegram ID'), unique=True, null=True, blank=True)

first_name = models.CharField(_('First name'), max_length=50, blank=True, null=True )
last_name = models.CharField(_('Last name'), max_length=50, blank=True, null=True )
middle_name = models.CharField(_('Middle name'), max_length=50, blank=True, null=True )
gender = models.CharField(_('Gender'), max_length=7, choices=GENDER_CHOICES, default='not_set')

profile_image = models.ImageField(_("Profile image"), upload_to='user/img/profile/', blank=True, null=True)
cover_image = models.ImageField(_("Cover image"), upload_to='user/img/cover/', blank=True, null=True)

user_verified_at = models.DateTimeField(_('User verified at'), null=True, blank=True)
phone_verified_at = models.DateTimeField(_('Phone verified at'), null=True, blank=True)
telegram_linked_at = models.DateTimeField(_('Telegram linked at'), null=True, blank=True)


USERNAME_FIELD = 'username'
REQUIRED_FIELDS = []

objects = UserManager()


class Meta:
    verbose_name = _("User")
    verbose_name_plural = _("Users")

def str(self):
    return str(self.username)
    

class ReservedUsername(models.Model):
username = models.CharField(max_length=30, unique=True)

def str(self):
    return self.username

class Meta:
    verbose_name = _("Reserved Username")
    verbose_name_plural = _("Reserved Usernames")`

managers.py
`
from django.contrib.auth.base_user import BaseUserManager

class UserManager(BaseUserManager):

use_in_migrations = True

def _create_user(self, username, password, **extra_fields):
    
    if not username:
        raise ValueError('Username is required')
    
    user = self.model(username=username, **extra_fields)
    user.set_password(password)
    user.save(using=self._db)
    return user
    
    
def create_user(self, username, password=None, **extra_fields):
    extra_fields.setdefault('is_staff', False)
    extra_fields.setdefault('is_superuser', False)
    extra_fields.setdefault('is_active', True)
    return self._create_user(username, password, **extra_fields)
    
    
def create_superuser(self, username, password, **extra_fields):
    extra_fields.setdefault('is_staff', True)
    extra_fields.setdefault('is_superuser', True)
    extra_fields.setdefault('is_active', True)

    if extra_fields.get('is_staff') is not True:
        raise ValueError('Superuser must be a staff')
    if extra_fields.get('is_superuser') is not True:
        raise ValueError('Superuser must be a superuser')
    
    return self._create_user(username, password, **extra_fields)`

one more thing.. if you could help, i need to make managers.py more efficient. I recently noticed any validation for username length, char regexp i configure there is not taking affect anywhere in project.

Thanks for answer to anyone in advance.

I tried to set email field null=True, blank=True