Gestione del form nel controller

ArticleController.php

<?php

namespace App\Controller;

use Symfony\Component\Routing\Annotation\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use App\Form\ArticleType;
use App\Entity\Article;

class ArticleController extends Controller
{
    /**
     * @Route("/create-new", name="article_new")
     */
    public function newArticle(Request $request)
    {
        $article = new Article();
    
        $form = $this->createForm(ArticleType::class, $article);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            // Il form è stato sottomesso
        }

        return $this->render('Backend/new.html.twig', [
            'form' => $form->createView()
        ]);
    }
}