About loadModel($id) in controller

in below code:

class ProjectController extends Controller{


    public function actionAddUser($id){

    	$projectUserForm = new ProjectUserForm();

    	$project = $this->loadModel($id);

    	$this->render('adduser', array(

    		'model' => $projectUserForm,




the model’s id is used in $this->loadModel($id), but I can not find it and how pass in controller. in Yii 1.1.4, function loadModel(), but in 1.1.6, loadModel($id).Where is it to be set?

If you are asking how to pass the $id… check Action Parameter Binding