abstract class Controller_Base extends Controller{

    public function before(){

        parent::before();
        Auth::_init();
        if (Input::get('logout')){
            Auth::logout();
            Response::redirect($this->request->uri);
        }

    }


}


//route
array(
  'admin/(:any)'    => !(Auth::check()) ? 'admin/admin/login' : 'admin/admin/$1' ,
);