Controller middleware in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is controller middleware in Laravel?

Controller middleware in Laravel is a way to filter HTTP requests entering your application by running code before or after a controller action. It helps manage tasks like authentication, logging, or input validation.

beginner

How do you apply middleware to a Laravel controller?

You apply middleware in a controller by calling the $this->middleware('middlewareName') method inside the controller's constructor. This runs the middleware on all or selected controller methods.

intermediate

How can you restrict middleware to only certain methods in a controller?

Use the only or except options when applying middleware, like $this->middleware('auth')->only(['index', 'show']) to run middleware only on those methods.

beginner

What happens if middleware denies a request in Laravel?

If middleware denies a request, it usually returns a response like a redirect or error before the controller method runs, stopping further processing.

intermediate

Can you apply multiple middleware to a single controller in Laravel?

Yes, you can apply multiple middleware by passing an array to $this->middleware(['auth', 'verified']). They run in the order listed.

How do you add middleware to a Laravel controller?

A By adding middleware in the model class

B Inside the controller constructor using $this->middleware()

C By editing the routes/web.php file only

D By calling middleware in the view file

Middleware is added inside the controller constructor using $this->middleware('name').

Which method restricts middleware to specific controller methods?

A both only() and except()

B except()

C only()

D middleware()

You can use both only() to include and except() to exclude methods when applying middleware.

What does middleware do if it blocks a request?

A Returns a response before controller runs

B Runs the controller anyway

C Deletes the request

D Logs the request and continues

Middleware returns a response like redirect or error before the controller method runs.

Can you apply multiple middleware to one controller?

A Only in the route file

B No, only one middleware per controller

C Only if middleware are chained in routes

D Yes, by passing an array to $this->middleware()

Multiple middleware can be applied by passing an array to $this->middleware(['one', 'two']).

Where is controller middleware typically defined?

A In the CSS file

B In the blade view

C In the controller constructor

D In the database migration

Middleware is defined inside the controller constructor using $this->middleware().

Explain how to apply middleware to only some methods of a Laravel controller.

Think about how to include or exclude methods when calling $this->middleware.

Describe what happens when middleware denies a request in Laravel.

Middleware can stop the request before it reaches the controller.