/**
* Insert entity identifier hidden field into form.
*
* This field is required in order to UniqueEntity constraint worked
* properly on client side with update operation.
*
* @param FormEvent $event
*/
public function preSetData(FormEvent $event)
{
$data = $event->getData();
$form = $event->getForm();
$config = $form->getConfig();
// This if statement let's us skip right over the null condition.
if (null === $data || !is_object($data)) {
return;
}
if ($config->getOption('compound') && $this->jsfv->hasUniqueEntityConstraint(get_class($data))) {
//Backward compability
$options = array();
if ($config->hasOption('mapped')) {
$options['mapped'] = false;
}
if ($config->hasOption('auto_initialize')) {
$options['auto_initialize'] = false;
}
//When entity is updated UniqueEntity constraint should ignore
//entity with the same primary key id
$identifierField = $this->jsfv->getParameter('identifier_field');
$form->add($this->factory->createNamed($identifierField, 'hidden', json_encode($this->jsfv->getEntityIdentifierValue($data)), $options));
}
}
/**
* @param ContainerInterface $container
* @param MetadataFactoryInterface $metadataFactory
*/
public function __construct(ContainerInterface $container, MetadataFactoryInterface $metadataFactory)
{
parent::__construct($container);
$this->metadataFactory = $metadataFactory;
}