Php Yii accessRules表达式不工作

在我的控制器中，我有

    /**
 * @return array action filters
 */
public function filters()
{
    return array(
        'accessControl', // perform access control for CRUD operations
    );
}

/**
 * Specifies the access control rules.
 * This method is used by the 'accessControl' filter.
 * @return array access control rules
 */
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 players to comment on games
            'actions'=>array('createComment'),
            'roles'=>array('createComment'),
        ),
  array('allow', // allow users to update and delete their own comments
    'actions'=>array('deleteComment'),
    'expression'=>'return $user->id==Game::model()->findByPk(Yii::app()->getRequest()->getQuery("id"))->author->id;',
  ),
        array('allow', // allow admin users to create, update, delete and manage games
            'actions'=>array('admin','create','update','delete','deleteComment'),
    'roles'=>array('admin'),
        ),
        array('deny',  // deny all users
            'users'=>array('*'),
        ),
    );
}

但由于某些原因，deleteComment上的表达式总是给我一个403错误（未授权）。尽管我已经测试过这个表达，并得到了真实的答案。即使将“表达式”=>“返回true；”不起作用（我完全糊涂了……有什么想法吗？

---

谢谢，Brad（：

在表达式的开头有一个额外的

返回值。是的，因此有两个结果会导致语法错误。删除你的，你就可以开始了