Symfony 6.4

# Installation de Symfony CLI
curl -sS https://get.symfony.com/cli/installer | bash

# Création d'un nouveau projet
symfony new mon_projet --version=6.4 --webapp

# Démarrage du serveur de développement
cd mon_projet
symfony server:start

composer create-project symfony/skeleton:"6.4.*" mon_projet
cd mon_projet
composer require webapp

mon_projet/
├── bin/                 # Scripts exécutables
├── config/             # Configuration de l'application
├── public/             # Point d'entrée web (index.php)
├── src/                # Code source de l'application
│   ├── Controller/     # Contrôleurs
│   ├── Entity/         # Entités (modèles)
│   └── Repository/     # Repositories
├── templates/          # Templates Twig
├── var/               # Fichiers temporaires (cache, logs)
├── vendor/            # Dépendances Composer
└── composer.json      # Configuration Composer

# Génération automatique
php bin/console make:controller HomeController

// src/Controller/HomeController.php
<?php
namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class HomeController extends AbstractController
{
    #[Route('/', name: 'app_home')]
    public function index(): Response
    {
        return $this->render('home/index.html.twig', [
            'title' => 'Bienvenue sur mon site Symfony !',
        ]);
    }
}

#[Route('/blog/{id}', name: 'blog_show', requirements: ['id' => '\d+'])]
public function show(int $id): Response
{
    return new Response('Article numéro: ' . $id);
}

#[Route('/blog/{slug}', name: 'blog_by_slug')]
public function showBySlug(string $slug): Response
{
    return new Response('Article: ' . $slug);
}

#[Route('/blog/{page}', name: 'blog_list', requirements: ['page' => '\d+'])]
public function list(int $page = 1): Response
{
    return new Response('Page: ' . $page);
}

<!-- templates/base.html.twig -->
<!DOCTYPE html>
<html>
    <head>
        <title>{% block title %}Mon Site{% endblock %}</title>
        {% block stylesheets %}{% endblock %}
    </head>
    <body>
        {% block body %}{% endblock %}
        {% block javascripts %}{% endblock %}
    </body>
</html>

<!-- templates/home/index.html.twig -->
{% extends 'base.html.twig' %}

{% block title %}{{ title }}{% endblock %}

{% block body %}
    <h1>{{ title }}</h1>
    <p>Ceci est ma première page Symfony !</p>
{% endblock %}

# .env
APP_ENV=dev
APP_SECRET=your-secret-key
DATABASE_URL="mysql://user:password@127.0.0.1:3306/ma_base"

# Vider le cache
php bin/console cache:clear

# Lister les routes
php bin/console debug:router

# Vérifier la configuration
php bin/console debug:config

# Mode debug
php bin/console about

use Psr\Log\LoggerInterface;

class HomeController extends AbstractController
{
    public function __construct(
        private LoggerInterface $logger
    ) {}

    #[Route('/', name: 'app_home')]
    public function index(): Response
    {
        $this->logger->info('Page d\'accueil visitée');
        
        return $this->render('home/index.html.twig');
    }
}

# Génération du contrôleur
php bin/console make:controller BlogController

# Structure des routes
/blog           → Liste des articles
/blog/{id}      → Affichage d'un article

# Installation du profiler (mode dev)
composer require --dev symfony/profiler-pack

# Debug d'une route spécifique
php bin/console debug:router app_home