Signals and receivers

A signal is a way to decouple the logic inside the models, a signal is like an Airtag, when an Airtag becomes closer to another device it should trigger an action, your action is wrapped inside a receiver and the signal is the emitter, this signal should be trigger manually in the cases of a custom signal or automatically in case of the signals which was created by Django like pre_save which is execute before executing model.save().

Writing signals

Read this.

Writing receivers

Read this.

Setting up the app to enable the signals

Read this.

Django signals

read this.

Where are the signals

It where in breathecode/APP_NAME/signals.py.

Where are the receivers

It where in breathecode/APP_NAME/receivers.py.

Where are tested the signals?

It where in breathecode/APP_NAME/tests/signals/tests_SIGNAL_NAME.py.

Where are tested the receivers?

It where in breathecode/APP_NAME/tests/receivers/tests_RECEIVER_NAME.py.