SonataAdminBundle/Form/Type/ModelReferenceType.php

<?php

/*
 * This file is part of the Sonata 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 Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormFactoryInterface;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;

use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\OptionsResolver\Options;

use Sonata\AdminBundle\Form\EventListener\MergeCollectionListener;
use Sonata\AdminBundle\Form\ChoiceList\ModelChoiceList;
use Sonata\AdminBundle\Form\DataTransformer\ModelsToArrayTransformer;
use Sonata\AdminBundle\Form\DataTransformer\ModelToIdTransformer;
use Sonata\AdminBundle\Model\ModelManagerInterface;

class ModelReferenceType extends AbstractType
{
    /**
     * {@inheritDoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->prependClientTransformer(new ModelToIdTransformer($options['model_manager'], $options['class']));
    }

    /**
     * {@inheritDoc}
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $compound = function (Options $options) {
            return isset($options['parent']) ? $options['parent'] : 'hidden';
        };

        $resolver->setDefaults(array(
            'compound'      => $compound,
            'model_manager' => null,
            'class'         => null
        ));
    }

    /**
     * {@inheritDoc}
     */
    public function getName()
    {
        return 'sonata_type_model_reference';
    }
}