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Laravel Controller

In Laravel, controllers are responsible for handling incoming HTTP requests and executing the appropriate logic to generate a response. They act as an intermediary between the routes defined in your application and the actual logic that processes the requests.

 

1. Creation: 

Controllers are created using the Artisan command-line tool:

php artisan make:controller YourControllerName

Controllers consist of methods that correspond to actions in your application.

class YourControllerName extends Controller {
    public function method1() {
        // Logic
    }

    public function method2() {
        // Logic
    }
}

 

2. Routing:

 Route to controller methods in routes/web.php.

Route::get('/route', [YourControllerName::class, 'method1']);

 

3. Dependency Injection:

 Laravel supports dependency injection in controllers.

public function method(Request $request) {
    // Logic
}

 

4. Responses:

 Controllers can return various responses like views, JSON, redirects, etc.

public function method() {
    return view('view_name');
}

 

5. Middleware:

 Apply middleware to controllers or specific methods.

public function __construct() {
    $this->middleware('auth');
}

Controllers act as the bridge between your application's HTTP requests and the underlying logic that handles those requests, allowing you to maintain a structured and organized codebase in your Laravel application.

 

Here's a basic example of a controller in Laravel

 

Example :

<?php

namespace App\Http\Controllers;

use App\Models\User;
use Illuminate\Http\Request;

class UserController extends Controller
{
    // Method to show all users
    public function index()
    {
        $users = User::all();
        return view('users.index', ['users' => $users]);
    }

    // Method to show a specific user
    public function show($id)
    {
        $user = User::find($id);
        return view('users.show', ['user' => $user]);
    }

    // Method to store a new user
    public function store(Request $request)
    {
        // Validate request data
        $validatedData = $request->validate([
            'name' => 'required|string|max:255',
            'email' => 'required|email|unique:users|max:255',
            'password' => 'required|string|min:8',
        ]);

        // Create a new user
        $user = User::create($validatedData);

        return redirect()->route('users.show', $user->id);
    }
}

 

After creating a controller, you need to define routes that point to the controller methods. You can define routes in the routes/web.php file.

use App\Http\Controllers\UserController;

Route::get('/users', [UserController::class, 'index'])->name('users.index');
Route::get('/users/{id}', [UserController::class, 'show'])->name('users.show');
Route::post('/users', [UserController::class, 'store'])->name('users.store');

 

 

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