SonataAdminBundle/Form/Extension/ChoiceTypeExtension.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\Extension;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

/**
 * Class ChoiceTypeExtension
 *
 * @package Sonata\AdminBundle\Form\Extension
 *
 * @author Amine Zaghdoudi <amine.zaghdoudi@ekino.com>
 */
class ChoiceTypeExtension extends AbstractTypeExtension
{
    /**
     * {@inheritdoc}
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setOptional(array('sortable'));
    }

    /**
     * {@inheritdoc}
     */
    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        $view->vars['sortable'] = array_key_exists('sortable', $options) && $options['sortable'];
    }

    /**
     * Returns the name of the type being extended.
     *
     * @return string The name of the type being extended
     */
    public function getExtendedType()
    {
        return 'choice';
    }
}