/**
 * Updates a particular model.
 * If update is successful, the browser will be redirected to the 'view' page.
 * @param integer $id the ID of the model to be updated
 */
public function actionUpdate($id)
{
    $model = $this->loadModel($id);

    // Uncomment the following line if AJAX validation is needed
    // $this->performAjaxValidation($model);

    if (isset($_POST['$MODELCLASS$'])) {
        $model->attributes = $_POST['$MODELCLASS$'];
        if ($model->save()) {
            $this->redirect(array('view', 'id' => $model->id));
        }
    }

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