Admin Index Controller

class Admin_IndexController extends Zend_Controller_Action {
    public function init(){
        Bvb_Grid::useModRewrite(true);
    }

    public function indexAction() {
       if (!Zend_Auth::getInstance()->hasIdentity()) {
            return $this->redirect('/admin/auth');
        }else{
            return $this->redirect('/admin/home');
        }
    }
}