CaracoleBundle/Controller/Merchant/FavoriteMerchantController.php

<?php

namespace Lc\CaracoleBundle\Controller\Merchant;

use Doctrine\ORM\EntityManagerInterface;
use Lc\CaracoleBundle\Definition\MerchantSettingDefinition;
use Lc\CaracoleBundle\Form\Merchant\SwitchMerchantFormType;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Security;

class FavoriteMerchantController extends AbstractController
{
    public function favoriteMerchant(Request $request, Security $security, EntityManagerInterface $em)
    {
        $user = $security->getUser() ;

        if($user) {
            $form = $this->createForm(SwitchMerchantFormType::class);
            $form->handleRequest($request);

            if ($form->isSubmitted() && $form->isValid()) {

                $merchant = $form->get('merchant')->getData();

                if ($merchant) {
                    $user->setFavoriteMerchant($merchant) ;
                    $em->update($user) ;
                    $em->flush() ;

                    $url = $merchant->getSettingValue(MerchantSettingDefinition::SETTING_URL).'admin';

                    if ($url) {
                        return $this->redirect($url);
                    }
                }
            }
        }
    }
}