Snippet for Yii's actionAdmin function in the Controller class

yii-actionAdmin.php

/**
* UsersController actionAdmin function
*/
public function actionAdmin() {
    $model = new Users('search');
    $model->unsetAttributes();  // clear any default values
    if (isset($_GET['Users']))
        $model->attributes = $_GET['Users'];

    $this->render('admin', array(
        'model' => $model,
    ));
}