namespace Plugin\RelatedProduct\Form\Extension\Admin;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\Validator\Constraints as Assert;//←追加

class RelatedCollectionExtension extends AbstractTypeExtension
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('related_collection', 'collection', array(
                'label' => '関連商品',
                'type' => 'admin_related_product',
                'allow_add' => true,
                'allow_delete' => true,
                'prototype' => true,
                'mapped' => false,
            ))
            /* ↓追加 */
            ->add(
                'plg_point_product_rate',
                'integer',
                array(
                    'label' => 'ポイント付与率',
                    'required' => false,
                    'mapped' => false,
                    'constraints' => array(
                        new Assert\Regex(
                            array(
                                'pattern' => "/^\d+$/u",
                                'message' => 'form.type.numeric.invalid',
                            )
                        ),
                        new Assert\Range(
                            array(
                                'min' => 0,
                                'max' => 100,
                            )
                        ),
                    ),
                )
            )
            /* ↑追加 */
        ;
    }