What are some examples of Django model signals?

What are some examples of Django model signals?

Django model signals allow certain senders to notify a set of receivers when some action has taken place. For example, you can use the post_save signal to perform actions after a model instance is saved.

Can you give me a specific example of using the post_save signal?

Sure! Here's a simple example: you can create a signal that sends a welcome email to a user after their profile is created. You would connect the post_save signal to the User model.

What about the pre_delete signal? How is it used?

The pre_delete signal is triggered just before a model instance is deleted. You can use it to perform cleanup actions, like removing related data or logging the deletion.

Are there any other signals I should know about?

Yes, there are several other signals like pre_save, post_init, and m2m_changed. Each serves different purposes in the lifecycle of a model instance.