Add some attributes or set options data to the existing field of an entity

Add some attributes or set options data to the existing field of an entity:

# vim src/My/DemoBundle/Form/Type/ContactType.php

<?php
namespace My\DemoBundle\Form\Type;

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

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

class ContactType extends AbstractType
{
    private $idJobFieldOptArr;


    public function __construct($optArr)
    {
        $this->idJobFieldOptArr = $optArr['idJobFieldOptArr'];
    }

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('firstname', 'text', array(
          'required' => FALSE,
        ));
        $builder->add('lastname', 'text', array(
          'required' => FALSE,
        ));
        $builder->add('idjobfield', 'choice', array(
          'required' => FALSE,
          'choices' => $this->idJobFieldOptArr,
          'placeholder' => '--- select ---',
        ));

        $builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
            $entity = $event->getData();
            $form = $event->getForm();

            if ($entity !== NULL && $entity->getId()) {
              $_id = $entity->getId();

              $firstnameOrig = $form->get('firstname')->getConfig()->getOptions();
              $firstnameOrig['attr'] = array('data-test' => 'test ' . $_id);

              $form->add('firstname', 'text', $firstnameOrig);
            }
        });
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'My\DemoBundle\Entity\Contact',
            #'idJobFieldOptArr' => null,
        ));
    }
}
?>

# vim src/My/DemoBundle/Controller/ContactController.php

<?php
namespace My\DemoBundle\Controller;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;

use My\DemoBundle\Entity\User;
use My\DemoBundle\Entity\Contact;

use My\DemoBundle\Form\Type\ContactType;

class ContactController extends Controller
{
    public function addAction(Request $request)
    {
        $idJobFieldOptArr = array(
          1 => 'Sales',
          2 => 'Accounting',
          3 => 'Management',
        );

        $user = self::myFindByEmail($email);

        if (!$user) {
          $user = new User();
        }

        $user->addContact(new Contact());

        $formName = 'contactsform';

        $formDefault = array(
            'email' => 'test@example.com',
            'contacts' => $user->getContacts(),
        );
        $formAttr = array('attr' => array(
          'class' => $formName,
        ));

        $form = $this->get('form.factory')->createNamedBuilder($formName, 'form', $formDefault, $formAttr)
          ->add('email', 'email', array(
            'label' => 'Email',
          ))
          ->add('contacts', 'collection', array(
            'type' => new ContactType(['idJobFieldOptArr' => $idJobFieldOptArr]),
            'allow_add' => TRUE,
            'allow_delete' => TRUE,
            #'options'  => array(
            #  #'idJobFieldOptArr' => $idJobFieldOptArr,
            #),
          ))
          ->add('save', 'submit', array('label' => 'Save'))
          ->getForm();
    }

    private function myFindByEmail($email)
    {
      return $this->getDoctrine()
               ->getRepository('MyDemoBundle:User')
               ->findOneByEmail($email);
    }

}
?>