Registering middleware in Laravel - Mini Project: Build & Apply

Registering Middleware in Laravel

📖 Scenario: You are building a Laravel web application that needs to check user roles before allowing access to certain pages.Middleware helps you run code before a request reaches your routes or controllers.

🎯 Goal: Learn how to register a custom middleware in Laravel and apply it to a route.

📋 What You'll Learn

Create a middleware class named CheckUserRole

Register the middleware in the app/Http/Kernel.php file

Apply the middleware to a route in routes/web.php

💡 Why This Matters

🌍 Real World

Middleware is used in real Laravel apps to control access, log requests, or modify responses before reaching controllers.

💼 Career

Understanding middleware registration and usage is essential for Laravel developers to implement security and request handling.

1

Create the CheckUserRole middleware class

Create a middleware class named CheckUserRole inside the app/Http/Middleware directory with a handle method that accepts $request and $next parameters.

Laravel

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;

class CheckUserRole
{
    public function handle(Request $request, Closure $next)
    {
        // Your code here
    }
}

Need a hint?

Use the handle method to pass the request to the next middleware or controller.

2

Register the CheckUserRole middleware in Kernel

Open the app/Http/Kernel.php file and add the CheckUserRole::class to the $routeMiddleware array with the key 'check.user.role'.

Laravel

<?php

namespace App\Http;

use Illuminate\Foundation\Http\Kernel as HttpKernel;

class Kernel extends HttpKernel
{
    protected $routeMiddleware = [
        // Your code here
    ];
}

Need a hint?

Add the middleware to the $routeMiddleware array with a key you will use in routes.

3

Apply the middleware to a route

In the routes/web.php file, create a route for /dashboard that uses the check.user.role middleware.

Laravel

<?php

use Illuminate\Support\Facades\Route;

// Your code here

Need a hint?

Use the middleware method on the route to apply your middleware key.

4

Complete the middleware to check user role

Update the handle method in CheckUserRole middleware to check if the authenticated user's role is 'admin'. If not, redirect to /home. Otherwise, allow the request to continue.

Laravel

middleware('check.user.role');

Need a hint?

Use Auth::check() to verify login and Auth::user()->role to check the role.