public ActionResult LectureSettingView()
        {
            var nowDisplayRole = HogwartsSettingUtility.GetSetting(HogwartsSettingUtility.NowDisplayRole);

            ViewBag.Lectures = LectureUtility.GetLecturesInNowRole(nowDisplayRole);
            return(PartialView("_LectureSettingView"));
        }
        // GET: HogwartsSettings
        public ActionResult Index()
        {
            var nowDisplayRole = HogwartsSettingUtility.GetSetting(HogwartsSettingUtility.NowDisplayRole);

            ViewBag.Roles = UserUtility.GetAllRoleExceptAdmin();
            ViewBag.LecturesForSelectBox = LectureUtility.GetLecturesInNowRole(nowDisplayRole);
            ViewBag.NowDisplayRole       = nowDisplayRole;
            ViewBag.NowLecture           = HogwartsSettingUtility.GetNowLecture();

            return(View(db.HogwartsSettings.ToList()));
        }