@RequestMapping(value = "/users/{userId:[0-9]+}/recommendations/show/{recId:[0-9]+}")
    @AuthRequired
    public String userRecommendationShow(Model model, HttpServletRequest request,
                                             @PathVariable String userId,
                                             @PathVariable String recId){
        if(recommendationsDao.existSelf(new Long(recId), new Long(userId))){
            try {
                model.addAttribute("rec",recommendationsDao.byId(new Long(recId)));
                model.addAttribute("back","/users/"+userId+"/recommendations/");
                return "showRecommendation";
            } catch (NoIdException e) {
                model.addAttribute("error","Some problems.");
            }
        }
        model.addAttribute("message", "No rec.\n");
        return "redirect:/users/"+userId;
    }