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 }));
}
