Middleware configuration in Django - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is middleware in Django?

Middleware is a way to process requests and responses globally before they reach the view or after the view has processed them. It acts like a chain of functions that can modify input or output.

beginner

Where do you configure middleware in a Django project?

Middleware is configured in the MIDDLEWARE list inside the settings.py file of a Django project.

intermediate

How does the order of middleware in the MIDDLEWARE list affect request processing?

Middleware is processed in the order listed for requests (top to bottom) and in reverse order for responses (bottom to top). So, order matters for how middleware interacts.

intermediate

How do you add a custom middleware in Django?

Create a middleware class with <code>__init__</code>, <code>__call__</code>, or specific methods like <code>process_request</code>. Then add its full Python path to the <code>MIDDLEWARE</code> list in <code>settings.py</code>.

beginner

What is a common use case for middleware in Django?

Common uses include handling authentication, logging requests, modifying response headers, or managing sessions globally across the app.

Where is the middleware list configured in a Django project?

A In the <code>models.py</code> file

B In the <code>settings.py</code> file under <code>MIDDLEWARE</code>

C In the <code>urls.py</code> file

D In the <code>views.py</code> file

Middleware is configured in the MIDDLEWARE list inside settings.py.

What happens first when a request comes in Django with multiple middleware?

A Middleware are processed top to bottom in the <code>MIDDLEWARE</code> list

B Middleware are processed bottom to top in the <code>MIDDLEWARE</code> list

C Only the last middleware runs

D Middleware order does not matter

Requests pass through middleware in the order they are listed (top to bottom).

How do you add a custom middleware to your Django project?

A Add it to <code>INSTALLED_APPS</code>

B Create a new app and name it middleware

C Add the middleware class path to the <code>MIDDLEWARE</code> list in <code>settings.py</code>

D Write middleware code inside <code>views.py</code>

Custom middleware must be added to the MIDDLEWARE list in settings.py.

Which of these is NOT a typical middleware use case?

A Defining database models

B Logging requests and responses

C Handling authentication globally

D Modifying response headers

Defining database models is done in models.py, not middleware.

In what order are middleware processed for responses?

A Only the first middleware processes responses

B Top to bottom of the <code>MIDDLEWARE</code> list

C Random order

D Bottom to top of the <code>MIDDLEWARE</code> list

Responses pass through middleware in reverse order (bottom to top).

Explain how middleware works in Django and how you configure it.

Think about the path a request takes through middleware before reaching views.

Describe a simple example of a custom middleware and how you add it to a Django project.

Focus on the steps from writing code to activating middleware.