/**
* Flash Messenger View Helper
* @return string
*/
public function __invoke($namespace = null)
{
$flashMessenger = new \Zend\Mvc\Controller\Plugin\FlashMessenger();
$messageString = '';
$namespaces = $this->namespaces;
if (!is_null($namespace)) {
// Allow an array or single
if (!is_array($namespace)) {
$namespaces = array($namespace);
} else {
$namespaces = $namespace;
}
}
foreach ($namespaces as $ns) {
$flashMessenger->setNamespace($ns);
$messages = array_merge($flashMessenger->getMessages(), $flashMessenger->getCurrentMessages());
if (empty($messages)) {
continue;
}
$viewModel = new ViewModel(array('namespace' => $ns, 'messages' => implode('<br />', $messages)));
$viewModel->setTemplate('flash-messenger/' . $ns);
$messageString .= $this->getRenderer()->render($viewModel);
}
return $messageString;
}
