/**
* Filters a value by calling all listeners of a given event.
*
* @param sfEvent $event A sfEvent instance
* @param mixed $value The value to be filtered
*
* @return sfEvent The sfEvent instance
*/
public function filter(Event $event, $value)
{
foreach ($this->getListeners($event->getName()) as $listener) {
$value = call_user_func_array($listener, array($event, $value));
}
$event->setReturnValue($value);
return $event;
}
