O Guia Definitivo do Yii 1.1

$auth=Yii::app()->authManager;
$auth->createOperation('createPost','create a post');
$auth->createOperation('readPost','read a post');
$auth->createOperation('updatePost','update a post');
$auth->createOperation('deletePost','delete a post');
$bizRule='return Yii::app()->user->id==$params["post"]->authID;';
$task=$auth->createTask('updateOwnPost','update a post by author himself',
$bizRule);
$task->addChild('updatePost');
$role=$auth->createRole('reader');
$role->addChild('readPost');
$role=$auth->createRole('author');
$role->addChild('reader');
$role->addChild('createPost');
$role->addChild('updateOwnPost');
$role=$auth->createRole('editor');
$role->addChild('reader');
$role->addChild('updatePost');
$role=$auth->createRole('admin');
$role->addChild('editor');
$role->addChild('author');
$role->addChild('deletePost');
$auth->assign('reader','readerA');
$auth->assign('author','authorB');
$auth->assign('editor','editorC');
$auth->assign('admin','adminD');
Once we have established this hierarchy, the authManager component (e.g.
CPhpAuthManager, CDbAuthManager) will load the authorization items automatically.
Therefore, we only need to run the above code one time, and NOT for every request.
Info: While the above example looks long and tedious, it is mainly for demonstrative
purpose. Developers will usually need to develop some administrative user interfaces
so that end users can use to establish an authorization hierarchy more intuitively.