FrontController.php

<?php

namespace App\Controller;

use App\Entity\GlobalParameter;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Routing\Annotation\Route;

class FrontController extends AbstractController
{
    protected function isFrontActivated()
    {
        return ($this->em->getRepository(GlobalParameter::class)->val(GlobalParameter::USE_WORDPRESS) == 'false');
    }
}