Form request classes in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Form Request class in Laravel?

A Form Request class is a special class in Laravel that handles validation and authorization of form data before the controller processes it. It helps keep controllers clean and organizes validation logic.

beginner

How do you create a Form Request class in Laravel?

You create a Form Request class by running the artisan command: <code>php artisan make:request YourRequestName</code>. This generates a class where you define rules and authorization.

beginner

What method do you use to define validation rules in a Form Request class?

You define validation rules inside the rules() method. This method returns an array where keys are form field names and values are validation rules.

intermediate

What is the purpose of the authorize() method in a Form Request class?

The authorize() method determines if the user is allowed to make this request. It returns true to allow or false to deny access.

intermediate

How do you use a Form Request class in a controller method?

You type-hint the Form Request class in the controller method's parameters. Laravel automatically validates the request before running the method. If validation fails, it redirects back with errors.

Which artisan command creates a Form Request class?

A php artisan make:request

B php artisan make:form

C php artisan make:validation

D php artisan make:controller

The correct command is php artisan make:request to create a Form Request class.

Where do you define validation rules in a Form Request class?

A In the <code>rules()</code> method

B In the <code>authorize()</code> method

C In the controller

D In the routes file

Validation rules are defined inside the rules() method of the Form Request class.

What does the authorize() method return to allow a request?

A null

B false

C true

D 1

Returning true from authorize() allows the request to proceed.

What happens if validation fails in a Form Request class?

A The app crashes

B Laravel redirects back with error messages

C The controller method runs anyway

D Nothing happens

If validation fails, Laravel automatically redirects back to the form with error messages.

How do you apply a Form Request class in a controller?

A Use it as a middleware

B Call it manually inside the method

C Register it in routes

D Type-hint it in the controller method parameters

You apply a Form Request by type-hinting it in the controller method parameters.

Explain how a Form Request class helps organize validation in Laravel.

Think about how keeping validation outside the controller helps.

Describe the steps to create and use a Form Request class in a Laravel app.

Start from creation, then how it works in the controller.