/**
* Makes this field to an optional.
*
* @param Field $field The field object
*
* @return Field
*/
public function optional(Field $field)
{
$disp = $field->getDispatcher();
$disp->addListener(Events::BEFORE_TRANSFORM, function (Event $event) {
if (null === $event->getInput()) {
$event->setData(null);
}
});
return $field;
}
/**
* Check if this field is empty or not.
*
* @param Field $field The form field
* @param string $message The error message
*
* @return Field
*/
public function required(Field $field, $message = 'formz.error.required')
{
$field->addConstraint(new \Formz\Constraint\Required($message));
$disp = $field->getDispatcher();
$disp->addListener(Events::BEFORE_TRANSFORM, function (Event $event) {
foreach ($event->getField()->getConstraints() as $cons) {
$cons->validate($event->getField(), $event->getInput());
}
});
return $field;
}
/**
* {@inheritdoc}
*/
public function initialize(Field $field)
{
// Activates annotation validation
if (null !== $this->validator) {
$disp = $field->getDispatcher();
$disp->addListener(Events::APPLIED, function (Event $event) {
$data = $event->getData();
if (!is_object($data)) {
return;
}
$violations = $this->validator->validate($data);
foreach ($violations as $violation) {
$field = $event->getField();
if ($field->hasChild($violation->getPropertyPath())) {
$field = $field->getChild($violation->getPropertyPath());
}
$field->addError(new Error($violation->getPropertyPath(), $violation->getMessage()));
}
});
}
}
