/// <summary>
 /// Met à jour un post forum
 /// </summary>
 /// <param name="id"></param>
 /// <param name="board"></param>
 /// <param name="content"></param>
 /// <param name="date"></param>
 /// <param name="author"></param>
 /// <returns></returns>
 public bool get_postforum(string id = "", string board = "", string content = "", DateTime date = new DateTime(), string author = "")
 {
     PostForum XNewPostForum = new PostForum(id, board, content, date, author);
     forumController controller = new forumController();
     controller.UpdatePostForum(XNewPostForum);
     return true;
 }