Symfony2 Form Option Resolution - php

Question

I'm using the FOSUserBundle and I'm trying to customize a user registration form with an is_admin option. I'm at a loss as to why the option value is not passed from the createForm() function call to the buildForm() function.
Below is the corresponding code in the controller:
$has_admin_rights = $this->get('security.authorization_checker')
->isGranted('ROLE_SUPER_ADMIN');
/** #var $formFactory \FOS\UserBundle\Form\Factory\FactoryInterface */
$formFactory = $this->get('fos_user.registration.form.factory');
/** #var $userManager \FOS\UserBundle\Model\UserManagerInterface */
$userManager = $this->get('fos_user.user_manager');
$user = $userManager->createUser();
...
$form = $formFactory->createForm(
new RegistrationFormType(), $user, array('is_admin' => $has_admin_rights));
Below is the custom form class which should, in theory, resolve the is_admin option. However it seems like the option is not properly passed.
class RegistrationFormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
if($options['is_admin'] === true)
{
$builder->add('uniqueRole', 'choice', array(
'choices' => array('ROLE_ADMIN' => 'user.role.admin',
'ROLE_TEACHER' => 'user.role.teacher',
'ROLE_STUDENT' => 'user.role.student'),
'label' => 'form.label.role',
'expanded' => false,
'multiple' => false,
'mapped' => false
));
$builder->remove('plainPassword')->add('plainPassword', 'hidden', array('data' => 'defaultPwd'));
} else {
// Default value is indeed set,
// and options[is_admin] always equals to false
if (array_key_exists("is_admin", $options)){
echo 'Set!';
} else {
echo 'Not Set!';
}
}
$builder->add('save', 'submit', array('label' => 'actions.add'));
}
protected function configureOptions(OptionsResolver $resolver)
{
$resolver->setRequired(array(
'is_admin'));
$resolver->setDefaults(array(
'is_admin' => false,
'data_class' => 'VMB\UserBundle\Entity\User',
'intention' => 'registration',
));
}
// BC for SF < 2.7
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$this->configureOptions($resolver);
}
public function getParent()
{
return 'fos_user_registration';
}
public function getName()
{
return 'vmb_user_registration';
}
}
I've also tried passing the parameter to a constructor this way
$form = $formFactory->createForm(new RegistrationFormType($has_admin_rights), $user);
however the symfony2 appCache initializes the form object without the proper param value (which falls back to defined null default value).
What am I doing wrong?

Answer 1

I think it's just a matter of invoking the wrong service.
You obtained the instance of FormFactory through:
$formFactory = $this->get('fos_user.registration.form.factory');
but this is not Symfony's FormFactory. In the matter of fact if you look at it's source here, you will see this:
public function createForm()
{
return $this->formFactory->createNamed($this->name, $this->type, null, array('validation_groups' => $this->validationGroups));
}
Basically, createForm does not expect any arguments at all.
So, instead, you should use Symfony's own form.factory (source):
$has_admin_rights = $this->get('security.authorization_checker')->isGranted('ROLE_SUPER_ADMIN');
/** #var $formFactory \FOS\UserBundle\Form\Factory\FactoryInterface */
$formFactory = $this->get('form.factory');
/** #var $userManager \FOS\UserBundle\Model\UserManagerInterface */
$userManager = $this->get('fos_user.user_manager');
$user = $userManager->createUser();
$form = $formFactory
->createBuilder(new RegistrationFormType(), $user, array('is_admin' => $has_admin_rights))
->getForm();
Hope this helps...