How can I create user profile after registering user in django using Signals?

Question

I am trying to create userprofile after user has been registered in django app.
User creation is working fine but it is not profile models in admin page.

It is not showing any errors.

So far I have done this.

users/signals.py

from django.db.models.signals import post_save
from django.contrib.auth.models import User
#reciever
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()

users/app.py

from django.apps import AppConfig

class UsersConfig(AppConfig):
    name = 'users'
    def ready(self):
        import users.signals

users/models.py

from django.db import models
from django.contrib.auth.models import User
# Create your models here.

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    image = models.ImageField(default='default.jpg', upload_to='profile_pic')

    def __str__(self):
        return f'{self.user.username} Profile'

Answer 1

Add this line of code to your app's __init__.py file as @Mohit Harshan mentioned

default_app_config = 'my_app.apps.MyAppConfig' 

Why RelatedObjectDoesNotExist error?
Some of your User object has no active relation with Profile instance.So run the following code in your Django shell

users_without_profile = User.objects.filter(profile__isnull=True)
for user in users_without_profile:
    Profile.objects.create(user=user)

Answer 2

In your settings.py you should change installed apps

if your settings like this

INSTALLED_APPS = ['users']

you should change it below like this.

INSTALLED_APPS = ['users.apps.UsersConfig']