symfony-playground/src/Controller/IndexController.php

<?php

namespace App\Controller;

use Doctrine\ORM\EntityManager;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use App\Repository\Entity1Repository;

class IndexController extends AbstractController
{
    #[Route('/', name: 'app_index')]
    public function index(Entity1Repository $repo): Response
    {
        $sm = $repo->getSchemaManager();
        $entity8 = $repo->findOneByName('entity 8');

        return $this->render('index/index.html.twig', [
            'controller_name' => 'IndexController',
            'entity8' => $entity8,
            'schemaManager' => $sm
        ]);
    }
}