open-orchestra/open-orchestra-cms-bundle

<?php

namespace OpenOrchestra\Backoffice\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;

/**
 * Class ContentTypeTypeSubscriber
 */
class ContentTypeTypeSubscriber implements EventSubscriberInterface
{
    /**
     * @param FormEvent $event
     */
    public function onPreSetData(FormEvent $event)
    {
        $form = $event->getForm();
        $data = $event->getData();
        if (null !== $data->getContentTypeId()) {
            $field = $form->get('contentTypeId');
            $config = $field->getConfig();
            $form->add(
                $field->getName(),
                $config->getType()->getName(),
                array_merge($config->getOptions(), array('disabled' => true))
            );
        }
    }

    /**
     * @return array The event names to listen to
     */
    public static function getSubscribedEvents()
    {
        return array(
            FormEvents::PRE_SET_DATA => 'onPreSetData',
        );
    }
}