public static void updateByVO(PermVO vo) {
vo.validate();
Permission p = Permission.findById(Long.parseLong(vo.id));
if (p == null) throw new RuntimeException("Permission not found");
p.action = vo.action;
p.desc = vo.desc;
Permission db_p = Permission.findByAction(p.action);
if (db_p != null && db_p.id != p.id) throw new RuntimeException("Action duplicate!");
p.save();
}
