// POST api/TimeTable
        public HttpResponseMessage PostTimeTable(TimeTable timetable)
        {
            if (ModelState.IsValid)
            {
                db.TimeTable.Add(timetable);
                db.SaveChanges();

                HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, timetable);
                response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = timetable.Id }));
                return response;
            }
            else
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
            }
        }
        public ActionResult Create(TimeTable timetable)
        {
            if (ModelState.IsValid)
            {
                List<TimeTable> s = db.TimeTable.Where(l => l.Active == true).ToList();
                if (s.Count == 1)
                {
                    TimeTable timetableActive = s.First();
                    timetableActive.Active = false;
                    db.Entry(timetableActive).State = EntityState.Modified;
                }

                db.TimeTable.Add(timetable);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(timetable);
        }
        // PUT api/TimeTable/5
        public HttpResponseMessage PutTimeTable(Int32 id, TimeTable timetable)
        {
            if (!ModelState.IsValid)
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
            }

            if (id != timetable.Id)
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest);
            }

            db.Entry(timetable).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException ex)
            {
                return Request.CreateErrorResponse(HttpStatusCode.NotFound, ex);
            }

            return Request.CreateResponse(HttpStatusCode.OK);
        }