When should I use Django signals?

When should I use Django signals in my project?

Django signals are useful for decoupling applications. You should use them when you want to trigger actions automatically in response to certain events, like saving a model instance.

Can you give me an example of a situation where signals would be beneficial?

Sure! For instance, if you want to send a welcome email to a user after they register, you can use the post_save signal to trigger the email sending function.

Are there any downsides to using signals?

Yes, overusing signals can make your code harder to understand and debug, as the flow of execution becomes less clear. It's best to use them judiciously.

How do I connect a signal to a model?

You can connect a signal to a model by using the @receiver decorator from django.dispatch. Just specify the signal and the sender model.