GRUD question

Hi, using yii i create CRUD and try to understand generated cod and have question: i see in action admin this cod - in manual same cod:

public function actionAdmin()


$model=new Post(‘search’);







this cod tests array $_GET for existing var ‘Post’. where from $_GET[‘Post’] comes - in $_GET may be var r and id, no ‘controller name’ var. May be it is dummy question but it is very helpful for me… Please help

$GET is generated by the values of the textbox in the top of the columns of CGridViews.

may be but why i can,t see this _GET in query string or in var_dump(_GET)?