function AjaxBlogCatalogTreeAction()
{
$request = Project::getRequest();
$request_user_id = (int) Project::getUser()->getShowedUser()->id;
$user_id = (int) Project::getUser()->getDbUser()->id;
$info = array();
$catalog_id = (int) $request->getKeyByNumber(0);
$level = (int) $request->getKeyByNumber(1);
$filter = (int) $request->getKeyByNumber(2);
$direction = (int) $request->getKeyByNumber(3);
if ($direction === 1) {
$tree_model = new BlogTreeModel();
$info['blog_catalog'] = $tree_model->loadByCatalog($catalog_id);
$subscribe_model = new BlogSubscribeModel();
foreach ($info['blog_catalog'] as $key => &$item) {
$subscribed = $subscribe_model->isSubscribed($user_id, $item['id']);
$count_subitems = $tree_model->countSubItems($item['key']);
if (!$filter || $subscribed || $count_subitems) {
$item['count_subitems'] = $count_subitems;
$item['need_subscribe'] = true;
$item['subscribed'] = $subscribed;
} else {
unset($info['blog_catalog'][$key]);
}
}
$info['level'] = $level + 1;
} else {
$info['level'] = $level;
}
//var_dump($info['level']);die;
$info['direction'] = $direction;
$info['id'] = $catalog_id;
$info['filter'] = $filter;
$this->_view->AjaxBlogCatalogTree($info);
$this->_view->ajax();
}