SonataAdminBundle/Form/Type/ModelHiddenType.php

<?php

/*
 * This file is part of the Sonata Project package.
 *
 * (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Sonata\AdminBundle\Form\Type;

use Sonata\AdminBundle\Form\DataTransformer\ModelToIdTransformer;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

/**
 * This type define a standard hidden field, that stored id to a object.
 *
 * @author Andrej Hudec <pulzarraider@gmail.com>
 */
class ModelHiddenType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->addViewTransformer(new ModelToIdTransformer($options['model_manager'], $options['class']), true)
        ;
    }

    /**
     * {@inheritdoc}
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'model_manager'     => null,
            'class'             => null,
        ));
    }

    /**
     * {@inheritdoc}
     */
    public function getParent()
    {
        return 'hidden';
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'sonata_type_model_hidden';
    }
}