468様
投稿ありがとうございました。

お手数ですが質問です。

TopController.phpにContactController.phpのfunction index()で行われている
formの準備、リクエスト受付時の処理(確認画面、完了画面の遷移、メール送信)を組み込む、とありましたので以下のようにやってみたのですが、トップページが表示されなくなります。

<?php

/*
* This file is part of EC-CUBE
*
* Copyright(c) EC-CUBE CO.,LTD. All Rights Reserved.
*
* http://www.ec-cube.co.jp/
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Eccube\Controller;

use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;
use Symfony\Component\Routing\Annotation\Route;

class TopController extends AbstractController
{
protected $mailService;
/**
* @Route("/", name="homepage")
* @Template("index.twig")
*/
public function index(
MailService $mailService)
{
$this->mailService = $mailService;
}
public function index(Request $request)
{
$builder = $this->formFactory->createBuilder(ContactType::class);

if ($this->isGranted('ROLE_USER')) {
/** @var Customer $user */
$user = $this->getUser();
$builder->setData(
[
'name01' => $user->getName01(),
'name02' => $user->getName02(),
'kana01' => $user->getKana01(),
'kana02' => $user->getKana02(),
'postal_code' => $user->getPostalCode(),
'pref' => $user->getPref(),
'addr01' => $user->getAddr01(),
'addr02' => $user->getAddr02(),
'phone_number' => $user->getPhoneNumber(),
'email' => $user->getEmail(),
]
);
}

// FRONT_CONTACT_INDEX_INITIALIZE
$event = new EventArgs(
[
'builder' => $builder,
],
$request
);
$this->eventDispatcher->dispatch(EccubeEvents::FRONT_CONTACT_INDEX_INITIALIZE, $event);

$form = $builder->getForm();
$form->handleRequest($request);

if ($form->isSubmitted() && $form->isValid()) {
switch ($request->get('mode')) {
case 'confirm':
$form = $builder->getForm();
$form->handleRequest($request);

return $this->render('Contact/confirm.twig', [
'form' => $form->createView(),
]);

case 'complete':

$data = $form->getData();

$event = new EventArgs(
[
'form' => $form,
'data' => $data,
],
$request
);
$this->eventDispatcher->dispatch(EccubeEvents::FRONT_CONTACT_INDEX_COMPLETE, $event);

$data = $event->getArgument('data');

// メール送信
$this->mailService->sendContactMail($data);

return $this->redirect($this->generateUrl('contact_complete'));
}
}

return [
'form' => $form->createView(),
];
}
public function complete()
{
return [];
}
}


組み込むとは具体的にどのようにしたらよいのでしょうか？
お手数ですが、もしお時間ございましたらご教示ください。
宜しくお願い致します。