syndu | Oct. 8, 2023, 12:33 p.m.
Django Signals are a sort of notification system for Django apps. They allow certain senders to notify a set of receivers when certain actions have taken place. They're used for decoupling applications so that they can respond to certain events.
Django includes a set of built-in signals that allow certain senders to notify a set of receivers when certain actions have taken place. For example, Django sends a
request_started signal before it starts processing a request, and a
request_finished signal after it's finished processing a request.
Signals are used for communication between components of Django. They allow decoupled applications to receive notifications when certain actions have taken place elsewhere in the application.
save()method is called, Django sends a
pre_savesignal before the actual database save operation, and a
post_savesignal after the save operation.
session_endedsignal is sent.
In conclusion, Django Signals are a powerful tool for decoupling applications and allowing them to respond to events. They are a key part of Django's functionality and understanding them is crucial for any Django developer.
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