public ActionResult AssignCourseToTrainee(int id) { var traineecourses = new AssignTraineeViewModel() { CourseId = id, Course = _context.Courses.SingleOrDefault(t => t.Id == id), Trainees = _context.Users.OfType <Trainee>().ToList(), }; return(View(traineecourses)); }
public ActionResult AssignCourseToTrainee(int CourseId, AssignTraineeViewModel model) { var assignCourse = new TraineeCourses(); assignCourse.CourseId = model.CourseId; assignCourse.TraineeId = model.TraineeId; if (!_context.TraineeCourses .Where(t => t.CourseId == model.CourseId) .Select(t => t.TraineeId) .Contains(model.TraineeId)) { _context.TraineeCourses.AddOrUpdate(assignCourse); _context.SaveChanges(); ViewBag.Message = "Assign successfully"; } else { ModelState.AddModelError("Validation", "This trainee has been assigned already"); } return(RedirectToAction("DetailCourse", "Staff", new { @id = CourseId })); }