Como tener dos administradores o mas, no quiero que sólo sea el usuario root:
public function accessRules()
{
return array(
array('allow', // allow all users to perform 'index' and 'view' actions
'actions'=>array('index','view'),
'users'=>array('*'),
),
array('allow', // allow authenticated user to perform 'create' and 'update' actions
'actions'=>array('create','update','delete'),
[b]'users'=>array('root'),[/b]
),
array('allow', // allow admin user to perform 'admin' and 'delete' actions
'actions'=>array('admin'),
'users'=>array('jerson'),
),
array('deny', // deny all users
'users'=>array('*'),
),
);
}