SonataAdminBundle/Form/Type/ModelReferenceType.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\OptionsResolver;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

/**
 * Class ModelReferenceType.
 *
 * @author  Thomas Rabaix <thomas.rabaix@sonata-project.org>
 */
class ModelReferenceType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->addModelTransformer(new ModelToIdTransformer($options['model_manager'], $options['class']));
    }

    /**
     * NEXT_MAJOR: Remove method, when bumping requirements to SF 2.7+.
     *
     * {@inheritdoc}
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $this->configureOptions($resolver);
    }

    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'compound' => false,
            'model_manager' => null,
            'class' => null,
        ));
    }

    /**
     * {@inheritdoc}
     */
    public function getParent()
    {
        // NEXT_MAJOR: Remove ternary (when requirement of Symfony is >= 2.8)
        return method_exists('Symfony\Component\Form\AbstractType', 'getBlockPrefix')
            ? 'Symfony\Component\Form\Extension\Core\Type\TextType'
            : 'text';
    }

    /**
     * NEXT_MAJOR: Remove when dropping Symfony <2.8 support.
     *
     * {@inheritdoc}
     */
    public function getName()
    {
        return $this->getBlockPrefix();
    }

    /**
     * {@inheritdoc}
     */
    public function getBlockPrefix()
    {
        return 'sonata_type_model_reference';
    }
}