@RequestMapping(value = "/delete-category/{categoryId}", method = RequestMethod.GET)
  public String deleteCategory(@PathVariable String categoryId, Model model) {
    try {
      categoryService.deleteCategory(Integer.parseInt(HtmlUtils.htmlEscape(categoryId)));
      model.addAttribute(
          "info",
          "<div class=\"info\">Succesfully Deleted <p> <a href='../manage-category.html'>Go back to Management Page</a></div>");
    } catch (EJBTransactionRolledbackException e) {
      model.addAttribute(
          "info",
          "<div class=\"info\">Category Doesn't Existed <p> <a href='../manage-category.html'>Go back to Management Page</a></div>");
    }

    return "manage-category";
  }