Django Signals vs Custom Signals: Which to Use?

What are Django signals and how do they work?

Django signals are a way to allow decoupled applications to get notified when certain actions occur elsewhere in the application. They work by sending notifications when specific events happen, like saving a model instance.

Can you explain the difference between built-in Django signals and custom signals?

Built-in Django signals are predefined signals provided by Django, like post_save and pre_delete. Custom signals, on the other hand, are user-defined signals that you can create to suit specific needs in your application.

When should I use custom signals instead of Django's built-in signals?

You should use custom signals when the built-in signals do not meet your specific requirements or when you need to signal events that are unique to your application.

Can you give an example of a custom signal?

Sure! You can create a custom signal like this: my_custom_signal = Signal(). Then, you can connect it to a receiver function that handles the signal when it's sent.