What are Django custom signals and how do I use them?

What are Django custom signals and how do I use them?

Django custom signals allow you to create your own signals to notify certain actions in your application. You can use them to decouple your code and make it more modular.

Can you give me an example of how to create a custom signal?

Sure! First, you need to import the Signal class from django.dispatch. Then, you can create a signal like this: my_signal = Signal().

How do I connect a receiver function to this signal?

You can connect a receiver function using the @receiver decorator. For example: @receiver(my_signal) def my_handler(sender, **kwargs): ....

What are some common use cases for custom signals?

Common use cases include user registration, sending notifications, or updating related models when a certain action occurs.