public static Result edit(String code) {
   List<NewsCategory> ncs = NewsCategory.getNewsCategoryAll();
   NewsCategory nc = NewsCategory.getNewsCategoryByCode(code);
   return ok(news_category.render(ncs, nc, false));
 }
 public static Result add() {
   List<NewsCategory> ncs = NewsCategory.getNewsCategoryAll();
   return ok(news_category.render(ncs, null, true));
 }