Decoupling Logic with Signals

Snippet

Decoupling Logic with Signals

Django signals allow certain senders to notify a set of receivers when actions occur, such as creating a profile automatically when a user is saved.

snippet.py
python
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import Profile, User
 
@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)

django

Breakdown

@receiver(post_save, sender=User)

Connects the function to the signal emitted after a User model is saved.

if created:

A boolean that is True if a new record was created, and False if an existing one was updated.

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Decoupling Logic with Signals

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