public function updateItem($item_id, $obj)
{
$object = array();
$object["user_id"] = $obj->user_id;
$object["title"] = $obj->title;
$object["body"] = $obj->body;
$object["published"] = $obj->published;
$object["body"] = $obj->body;
$wkey["id"] = $item_id;
$ret = $this->update($object, $wkey);
$item = $this->getById($item_id);
return $item;
}