/**
* Returns the data model based on the primary key given in the GET variable.
* If the data model is not found, an HTTP exception will be raised.
* @param integer the ID of the model to be loaded
*/
public function loadModel( $id )
{
$model = Productstockhistory::model()->findByPk( $id );
if ( $model === null )
throw new CHttpException( 404, 'The requested page does not exist.' );
return $model;
}
