public ActionResult Assign(AssignLabAssistantViewModel model)
        {
            var labAssistanceInDb = _context.LabAssistances.Single(s => s.Id == model.LabAssistantId);

            labAssistanceInDb.AssignedLabRoomId = model.RoomId;

            _context.SaveChanges();

            return(RedirectToAction("Index"));
        }
        public ActionResult Assign(int id)
        {
            var labAssistantInDb = _context
                                   .LabAssistances
                                   .Single(s => s.Id == id);

            var labRooms = _context
                           .Rooms
                           .Include(s => s.Building)
                           .Where(r => r.IsLabRoom)
                           .ToList();

            var viewModel = new AssignLabAssistantViewModel
            {
                LabAssistant   = labAssistantInDb,
                LabAssistantId = labAssistantInDb.Id,
                Rooms          = labRooms
            };

            return(View(viewModel));
        }