/**
* 增加一条导航信息
*
* @param object $dm 导航模型数据
* @return array
*/
public function addNav(PwNavDm $dm)
{
$resource = $dm->beforeAdd();
if ($resource instanceof PwError) {
return $resource;
}
$data = $dm->getData();
$navId = $this->_getNavDao()->addNav($data);
$this->_updateNav($navId, $data);
return $navId;
}
