Receiver decorator in Django - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the @receiver decorator in Django?

The @receiver decorator connects a function to a Django signal, so the function runs automatically when that signal is sent.

beginner

How do you import the <code>@receiver</code> decorator in Django?

You import it with: <code>from django.dispatch import receiver</code>.

intermediate

Explain the role of the signal argument in the @receiver(signal) decorator.

The signal argument tells Django which signal the decorated function should listen to and respond when that signal is sent.

intermediate

What parameters does a receiver function typically accept?

A receiver function usually accepts sender, instance, and **kwargs to get details about the signal event.

intermediate

Why is using the @receiver decorator better than manually connecting signals with signal.connect()?

The @receiver decorator makes the code cleaner and easier to read by linking the function directly to the signal in one place.

What does the @receiver decorator do in Django?

A Runs a function immediately

B Creates a new signal

C Deletes a signal

D Connects a function to a signal

The @receiver decorator connects a function to a Django signal so it runs when the signal is sent.

Which module do you import @receiver from?

A django.models

B django.signals

C django.dispatch

D django.utils

You import @receiver from django.dispatch.

What argument do you pass to the @receiver decorator?

A The signal to listen for

B The sender class

C The function name

D The model name

You pass the signal you want the function to listen for to the @receiver decorator.

Which of these is NOT a typical parameter of a receiver function?

A request

B instance

C sender

D **kwargs

Receiver functions usually accept sender, instance, and **kwargs, but not request.

Why use the @receiver decorator instead of signal.connect()?

A It runs the function faster

B It makes code cleaner and easier to read

C It disables the signal

D It automatically deletes the function

The @receiver decorator links the function to the signal clearly in one place, improving code readability.

Describe how the @receiver decorator works in Django and why it is useful.

Think about how Django signals notify parts of your app and how the decorator helps handle that.

Explain the typical parameters a receiver function accepts and what information they provide.

Consider what details the function needs to respond properly to the signal.