@GetMapping("/article/{id}")
    public String details(Model model, @PathVariable Integer id) {
        if(!this.articleRepository.exists(id)) {
            return "redirect:/";
        }

        if(!(SecurityContextHolder.getContext().getAuthentication()
        instanceof AnonymousAuthenticationToken)) {
            UserDetails principal = (UserDetails) SecurityContextHolder.getContext()
                    .getAuthentication().getPrincipal();

            User entityUser = this.userRepository.findByEmail(principal.getUsername());

            model.addAttribute("user", entityUser);
        }

        Article article = this.articleRepository.findOne(id);

        String encodeToString = Base64.getEncoder().encodeToString(article.getArticlePictures());

        model.addAttribute("encodeToString", encodeToString);

        model.addAttribute("article", article);
        model.addAttribute("view", "article/details");

        return "base-layout";
    }