Get FormField passed options within a FormEvent

Question

In a Symfony project, I have a Form EventSubscriber acting on several forms.

It aims to disable each field which is already filled.

In the Subscriber when I use:

$childOptions = $child->getConfig()->getOptions();

I receive all resolved options for a child, I want to get only those passed during the form building. (Because form some FormTypes (i.o. DocumentType) it is not possible to reinject all resolved options, some of them causes troubles).

• A FormType example :

  class FooType extends AbstractType
  {
      public function buildForm(FormBuilderInterface $builder, array $options)
      {
          $builder
              ->add('entity',EntityType::class,array( 
                          'class' => 'AppBundle:User',
                          'choice_label' => 'username',
                  ))
              ->addEventSubscriber($this->changesSubscriber); // See next class
      }
  }
  

• The Subscriber :

  class ChangesSubscriber implements EventSubscriberInterface
  {
      // Disables filled inputs
      public function postSetData(FormEvent $event)
      {
          $form = $event->getForm();
  
          foreach($form->all() as $child)
          {
              $childName = $child->getName();
              $childType = $child->getConfig()->getType()->getName();
  
              // Here I receive all resolved options
              // But I only want the options passed above during 'buildForm' ('class','choice_label') :
              $childOptions = $child->getConfig()->getOptions(); 
  
              if(!$child->isEmpty()){
                  $form->add($childName,$childType,array_merge($childOptions,array('disabled'=>true)));
              }
          }
      }
  }
  

This is one example of many use cases, another example could be : Alsatian\FormBundle ExtensibleSubscriber

-> A formsuscriber to make AJAX submitted choices acceptacles for Choice/Entity/Document Types. At this time, as you can see, I choosed to only take a couple of resolved options, but I'm not satisfied with this solution.

Answer 1

Sounds like you need to change your approach.

Maybe make a custom form type, and some of the options to it should be the options to create the original type, similar to how CollectionType works.

Maybe it looks a bit like this:

->add('entity', AjaxType::class,array( 'ajax_type' => EntityType:class, 'ajax_options' => [ 'class' => 'AppBundle:User', 'choice_label' => 'username', ] ))

That type can add the event that listens for the data and decides what to do.