Symfony2 - Callback validator on collection - symfony

Question

In symfony2 I'm tying to use a callback to validate my form, but this callback is never called. The class wherein the callback is, is called in the main form through a collection.
Here is my code...
Main class :
class InscriptionType extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('inscriptionReponses','collection',array('label'=>false,
'type'=>new InscriptionReponseType(),
'error_bubbling'=>false,
'by_reference'=>false))
;
}
}
InscriptionReponse class :
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\ExecutionContextInterface;
/**
* InscriptionReponse
*
* #ORM\Table()
* #ORM\Entity(repositoryClass="Ptolemee\ColloqueBundle\Entity\InscriptionReponseRepository")
* #Assert\Callback(methods={"formValidation"})
*/
class InscriptionReponse
{
/* ... some code ... */
public function formValidation(ExecutionContextInterface $context)
{
die('not dying ?');
}
}
I don't understand what's wrong... any help would be highly appreciated. tahnks.
Nicolas.

Answer 1

The callback function of the collection is being called when you add #Assert\Valid to the collection in the containing entity.
Let's say Inscription has a collection of InscriptionResponses:
class Inscription
{
/**
* #Assert\Valid()
*/
private $inscriptionResponses;
}
class InscriptionResponse
{
/**
* #Assert\Callback
*/
public function formValidation(ExecutionContextInterface $context)
{
die('dying');
}
}
This works regardless of the value of the error_bubbling option.

Answer 2

base on what is written in the documentation:
http://symfony.com/doc/current/reference/constraints/Callback.html
instead of
/**
* #Assert\Callback(methods={"formValidation"})
*/
class InscriptionReponse
{
you should move the annotation above the function itself
class InscriptionReponse
{
/**
* #Assert\Callback
*/
public function formValidation(ExecutionContextInterface $context)
{
die('not dying ?');
}
The method you used was valid in version 2.3, you use 2.4 probably now