public function listAction($id = null)
{
$this->view->disable();
$realtyCategories = RealtyCategories::findByRealtyTypeId($id);
$data = array();
foreach ($realtyCategories as $key => $realtyCategory) {
$data[] = array('id' => $realtyCategory->id, 'name' => $realtyCategory->name);
}
echo json_encode($data);
}
