muzich/src/Muzich/CoreBundle/Form/Group/GroupForm.php

<?php

namespace Muzich\CoreBundle\Form\Group;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class GroupForm extends AbstractType
{
  public function buildForm(FormBuilderInterface $builder, array $options)
  {
    $builder->add('name', 'text', array(
      'required' => true,
    ));
    
    $builder->add('description', 'textarea', array(
      'required' => false,
    ));
    
    $builder->add('open', 'checkbox', array(
      'required' => false,
    ));
        
    $builder->add('tags', 'hidden');
  }

  public function getName()
  {
    return 'group';
  }
  
  public function setDefaultOptions(OptionsResolverInterface $resolver)
  {
    $resolver->setDefaults(array(
      'name'       => '',
      'open'       => true,
      'tags'       => '',
      //'data_class' => 'Muzich\CoreBundle\Entity\Group'
    ));
  
    $resolver->setAllowedValues(array(
      'open'       => array(true, false)
    ));
  }
}