Расширение модели User

class Profile(models.Model):
    user = models.OneToOneField(User, primary_key=True, on_delete=models.CASCADE)
    balance = models.DecimalField(max_digits=7, decimal_places=2, default=0, blank=True)
    status = models.CharField(max_length=50, default='', blank=True)

def func(sender, instance, **kwargs):
    print(sender)
    print(instance)
post_save.connect(func, User)

class Profile(models.Model):
    # Штатное, сотрудники
 
    USER_RIGHTS = (
        (0, ''),
        (1, '1 Чтен'),
        (2, '2 Запс'),
        (5, '5 ЗЧуж'),
    )
 
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    department = models.ForeignKey(Main_department, on_delete=models.PROTECT, null=True, verbose_name='Отдел')
    role = models.ForeignKey(Main_role, on_delete=models.PROTECT, null=True, verbose_name='Должность')
    fio_full = models.CharField(max_length=60, default='', verbose_name='ФИО_Полное')
    fio = models.CharField(max_length=40, default='', verbose_name='ФИО')
    telephone = models.CharField(max_length=15, default='', verbose_name='Телефон')
    email = models.CharField(max_length=40, default='')
    grp_contract = models.IntegerField(choices=USER_RIGHTS, default=0, verbose_name='Договор')
 
    def __str__(self):
        return self.fio
 
    class Meta:
        verbose_name = 'Пользователь сведения'
        verbose_name_plural = 'Пользователи сведения'
 
@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance, id=instance.id)
 
@receiver(post_save, sender=User)
def save_user_profile(sender, instance, **kwargs):
    instance.profile.save()

from django.db import models
from django.contrib.auth.models import User
from django.utils.timezone import now
from core.models import City
 
 
class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    city_user_choice = models.ForeignKey(City, null=True, on_delete=models.CASCADE)
 
    First_Name = models.CharField(default="First Name", max_length=30)
    Last_Name = models.CharField(default="Last Name", max_length=30)
    Year = models.IntegerField(default="18")
    image = models.ImageField(default="default.jpg", upload_to="profile_image")
    job = models.CharField(max_length=100)
    bio = models.TextField()
 
    def __str__(self):
        return self.user.username
 
class RegistrationForEvent(models.Model):
    First_Name = models.CharField(max_length=30)
    Last_Name = models.CharField(max_length=30)
    Year = models.IntegerField(default="18")
    timestamp = models.DateTimeField(default=now)

from django.db.models.signals import post_save
from django.contrib.auth.models import User
from django.dispatch import receiver
from .models import Profile
 
 
@receiver(post_save, sender=User)
def create_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)
 
 
@receiver(post_save, sender=User)
def save_profile(sender, instance, **kwargs):
    instance.profile.save()