symfony集合类型将javascript函数添加到集合字段

use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\OptionsResolver\OptionsResolver;

class MyFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('myCollectionField', CollectionType::class, [
            'entry_type' => TextType::class,
            'allow_add' => true,
            'allow_delete' => true,
            'prototype' => true,
            'attr' => [
                'class' => 'my-collection-field',
            ],
        ]);

        $builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
            $form = $event->getForm();
            $form->add('myCollectionField', CollectionType::class, [
                'entry_type' => TextType::class,
                'allow_add' => true,
                'allow_delete' => true,
                'prototype' => true,
                'attr' => [
                    'class' => 'my-collection-field',
                ],
            ]);

            $form->add('myCollectionField', CollectionType::class, [
                'entry_type' => TextType::class,
                'allow_add' => true,
                'allow_delete' => true,
                'prototype' => true,
                'attr' => [
                    'class' => 'my-collection-field',
                ],
            ]);

            $form->add('myCollectionField', CollectionType::class, [
                'entry_type' => TextType::class,
                'allow_add' => true,
                'allow_delete' => true,
                'prototype' => true,
                'attr' => [
                    'class' => 'my-collection-field',
                ],
            ]);
        });
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => MyFormData::class,
        ]);
    }
}