使用isAllowed后显示错误信息

Question

例如，我在从Zend_Acl_Assert_Interface派生的类中实现了assert方法。

function assert(
    Zend_Acl $acl,
    Zend_Acl_Role_Interface $user = null,
    Zend_Acl_Resource_Interface $item = null,
    $privilege = null
) {
    if (!$user instanceof User) throw new Exception("…");
    if (!$item instanceof Item) throw new Exception("…");
    return
        $user->money >= $item->price &&
        $user->rating >= $item->requiredRating;
}

它检查两个条件:用户有足够的钱和用户有足够的评级。如何显示错误信息，让用户知道哪个条件是失败的isAllowed方法只返回bool?

Answer 1

只需逐个检查

$error = array();
if(!($user->money >= $item->price))
$error[] = "user money is less then price";
if(!($user->rating >= $item->requiredRating))
$error[] = "user rating less then required rating ";
Zend_Registery::set('acl_error',$error);
if(count($error) == 2) return false;
return true;

你可以通过Zend_Registry::get('acl_error');并显示给用户你喜欢的