@RequestMapping(value = "/{id}/control-letters", method = RequestMethod.GET) public String showControlLetters( @PathVariable("id") int id, Model model, final RedirectAttributes redirectAttributes) { if (!ticketsInvoiceService.invoiceExists(id)) throw new ResourceNotFoundException(); List<ControlLetter> controlLetters = controlLetterService.findAll(id); handleFlashMessages(redirectAttributes, model); model.addAttribute("ticketsInvoiceId", id); model.addAttribute("controlLetters", controlLetters); return "controlLetter/find"; }