public function reloadRenditionsAction()
{
if (!$this->getRequest()->isPost()) {
throw new \Zend_Controller_Action_Exception('POST required', 405);
}
$translator = \Zend_Registry::get('container')->getService('translator');
$this->_helper->service('image.rendition')->reloadRenditions();
$this->_helper->flashMessenger($translator->trans('Renditions reloaded', array(), 'article_images'));
$this->_helper->redirector('index', 'rendition', 'admin');
}