【EC-CUBE 4】オリジナルテーブルに新規データ（レコード）を追加する方法

<?php

namespace Customize\Controller;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;
use Eccube\Controller\AbstractController;
use Customize\Entity\Maker;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Doctrine\ORM\EntityManagerInterface;

class MakerRegisterController extends AbstractController
{
  /**
   * @Route("/maker_register", name="maker_register")
   * @Template("maker_register.twig")
   */
  public function create(Request $request, EntityManagerInterface $entityManager)
  {
    $maker = new Maker();
    $form = $this->createFormBuilder($maker)
      ->add('name', TextType::class, array('label' => 'メーカー名'))
      ->add('code', TextType::class, array('label' => 'メーカーコード'))
      ->add('save', SubmitType::class, array('label' => 'Register'))
      ->getForm();

      if ($request->isMethod('POST')) {
        $form->handleRequest($request);
  
        if ($form->isSubmitted() && $form->isValid()) {
          $entityManager->persist($maker);
          $entityManager->flush();
          return [
            'message' => '登録完了しました！',
            'form' => $form->createView(),
          ];
        } else {
          return [
            'message' => '入力に誤りがあります。',
            'form' => $form->createView(),
          ];
        }
      }

      return [
      'message' => 'メーカー情報を新規登録します。',
      'form' => $form->createView(),
      ];
  }
}

{% extends 'default_frame.twig' %}

{% block main %}

<h1>{{ message }}</h1>
{{ form_start(form) }}
{{ form_widget(form) }}
{{ form_end(form) }}

{% endblock %}