我想创建一个系统，我可以根据用户的角色检查权限 . 我正在使用Symfony ACL . 我已经在acl中授予了类权限，这是代码

public function addContractPermission()
{

    $adminBuilder = new MaskBuilder();
    $adminBuilder->add('view')
                 ->add('edit')
                 ->add('delete');

    $adminMask = $adminBuilder->get();

    $guestBuilder = new MaskBuilder();
    $guestBuilder->add('view');

    $guestMask = $guestBuilder->get();

    $aclProvider = $this->get('security.acl.provider');

    // Use class for object identity as below
    $oid = new ObjectIdentity('agreement', 'Company\\Entity\\Agreement');

    $acl = $aclProvider->createAcl($oid);

    $securityAdminIdentity = new RoleSecurityIdentity("ROLE_ADMIN");
    $securityGuestIdentity = new RoleSecurityIdentity("ROLE_GUEST");

    // grant owner access to users with above role
    $acl->insertClassAce($securityAdminIdentity, $adminMask);
    $acl->insertClassAce($securityGuestIdentity, $guestMask);

    $aclProvider->updateAcl($acl);

    return $this->render('FintelBundle:Security:addcontractsecurity.html.twig', array(
            'utente' => $this->getUser(),
            'message' => 'Added ROLE_ADMIN mask('.$adminMask.') e ROLE_GUEST mask('.$guestMask.')'
    ));
}

当我列出我的“协议”时，我正在检查当前用户是否可以编辑，在我的twig文件中 .

{% block content %}
<h3>Agreements</h3>
<ol>
{% for agreement in agreements %}
    <li>{{ agreement.description }} - Author: {{ agreement.user.username }} - 
{% if(is_granted('EDIT', agreement))  %}Edit{% endif %}</li>
{% endfor %}
</ol>
{% endblock %}

在这种情况下，即使我的用户有ROLE_ADMIN，我也总是假的

如果我改变了树枝（is_granted不是检查对象而是字符串）

{% block content %}
<h3>Agreements</h3>
<ol>
{% for agreement in agreements %}
    <li>{{ agreement.description }} - Author: {{ agreement.user.username }} - 
{% if(is_granted('EDIT', 'agreement'))  %}Edit{% endif %}</li>
{% endfor %}
</ol>
{% endblock %}

即使我的用户是一个简单的ROLE_GUEST，它也总是如此 .

我哪里错了？

php symfony acl