`if (strpos($template, 'shipped')){
  $id_factura = $templateVars['{id_order}'];
   $orden = new Order($id_factura);
  $factura['content'] = PDF::invoice($orden, 'S');
   $factura['name'] = $id_factura.'.pdf';
   $factura['mime'] = 'application/pdf';
   $message->attach(new Swift_Message_Attachment($factura['content'], $factura['name'], $factura['mime']));
}`