Using signals in django

__init__.py

# some_app/__init__.py
# some_app is the name of the app.

default_app_config = 'some_app.apps.'

apps.py

# some_app/apps.py

class SomeApp(AppConfig):
  name = 'some_app'
  
  def ready(self):
    import some_app.mysignal
   
 # create mysignal.py in some_app , this is where the code for our signal is present.

mysignal.py

# some_app/mysignal.py

from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver

from some_app.models import SomeModel


# Here, I implemented a basic signal of save_profile, it gets called once the User is successfully added to the User table.
# For more signals, check out the documentation.
# There are different signals present in Django packages like django-allauth, registration-redux..etc..etc.
# If u are using one of these packages, check out their signals as well, maybe you'll find something useful.

@receiver(post_save, sender=User)
def save_profile(sender, instance, created, **kwargs):
    if created:
        SomeModel.objects.create(user=instance, name=instance.username)