public function treeAction()
{
$dir = Newsletter\Config::getWorkingDir();
$letters = array();
$files = scandir($dir);
foreach ($files as $file) {
if (strpos($file, ".xml")) {
$name = str_replace(".xml", "", $file);
$letters[] = array("id" => $name, "text" => $name);
}
}
$this->_helper->json($letters);
}
