/**
* Register a 'can([Execute])' function into the template
*
* @param CommandInterface $context
* @return void
*/
protected function _beforeRender(CommandInterface $context)
{
$controller = $context->getSubject();
if ($controller->getView() instanceof ViewTemplatable) {
$controller->getView()->getTemplate()->registerFunction('can', array($this => 'canExecute'));
}
}
/**
* Command handler
*
* @param CommandInterface $command The command
* @param CommandChainInterface $chain The chain executing the command
* @return mixed|null If a handler breaks, returns the break condition. NULL otherwise.
*/
public function execute(CommandInterface $command, CommandChainInterface $chain)
{
$type = '';
$package = '';
$subject = '';
if ($command->getSubject()) {
$identifier = $command->getSubject()->getIdentifier()->toArray();
$package = $identifier['package'];
if ($identifier['path']) {
$type = array_shift($identifier['path']);
$subject = $identifier['name'];
} else {
$type = $identifier['name'];
}
}
$parts = explode('.', $command->getName());
$when = array_shift($parts);
// Before or After
$name = StringInflector::implode($parts);
// Action
// Create Specific and Generic event names
$event_specific = 'on' . ucfirst($when) . ucfirst($package) . ucfirst($subject) . ucfirst($type) . $name;
$event_generic = 'on' . ucfirst($when) . ucfirst($type) . $name;
// Clone the context
if ($this->isEventImmutable()) {
$event = clone $command;
} else {
$event = $command;
}
// Create event object to check for propagation
$event = $this->getEventPublisher()->publishEvent($event_specific, $event->getAttributes(), $event->getSubject());
// Ensure event can be propagated and event name is different
if ($event->canPropagate() && $event_specific != $event_generic) {
$event->setName($event_generic);
$this->getEventPublisher()->publishEvent($event);
}
}
