public IActionResult UpdateAnswer(int answer_id, string answer_detail, string update)
        {
            Answer a = DataAccessor.GetAnswer(answer_id);

            if (update == "Delete")
            {
                long q_id = a.question_id;
                DataAccessor.DeleteAnswer(answer_id);
                return(RedirectToAction("Detail", "DevHub", new { id = q_id }));
            }
            else
            {
                a.detail = answer_detail;
                DataAccessor.SaveAnswer(a);
                return(RedirectToAction("Detail", "DevHub", new { id = a.question_id }));
            }
        }