VehicleRegisteredTypeTypeMap.php

<?php

namespace App\Form;

use App\Entity\VehicleRegisteredType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;

class VehicleRegisteredTypeTypeMap extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('map', EntityType::class, [
                'class' => VehicleRegisteredType::class,
                'multiple'  => true,
            ])
        ;
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(
            [
                'data_class' => VehicleRegisteredType::class,
                'allow_extra_fields' => true,
                'csrf_protection' => false,
            ]
        );
    }
}