`make:controller --standalone --invoke`

WithoutTwigController.php

<?php

namespace App\Controller;

use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpKernel\Attribute\AsController;
use Symfony\Component\Routing\Annotation\Route;

#[AsController]
class WithoutTwigController
{
    #[Route('/without/twig', name: 'app_without_twig')]
    public function __invoke(): JsonResponse
    {
        return new JsonResponse([
            'message' => 'Welcome to your new controller!',
            'path' => 'src/Controller/WithoutTwigController.php',
        ]);
    }
}

WithTwigController.php

<?php

namespace App\Controller;

use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Attribute\AsController;
use Symfony\Component\Routing\Annotation\Route;
use Twig\Environment;

#[AsController]
class WithTwigController
{
    public function __construct(
        private Environment $twig,
    ) {
    }

    #[Route('/with/twig', name: 'app_with_twig')]
    public function __invoke(): Response
    {
        return new Response($this->twig->render('with_twig.html.twig', [
            'controller_name' => 'WithTwigController',
        ]));
    }
}