// Populate CourseOffering View Model
public CourseOfferingViewModel PopulateViewModel(CourseOfferingViewModel viewModel)
{
viewModel.Courses = _courseService.GetAllCourses().OrderBy(c => c.Name).ToList();
viewModel.CourseOfferings = _courseService.GetAllCourseOfferings();
viewModel.CourseOfferings.Sort(new CourseOfferingComparer());
viewModel.Years = Enumerable.Range(DateTime.Now.Year, 4).Select(i => new SelectListItem
{
Text = i.ToString(),
Value = i.ToString()
});
return viewModel;
}
public ActionResult Add(CourseOfferingViewModel input)
{
// Populate VM
var viewModel = PopulateViewModel(input);
// Validate model state
if (!ModelState.IsValid)
return View(viewModel);
// Attempt to add the offering
try
{
var offering = new CourseOffering(_courseService.GetCourseById(input.SelectedCourseId), input.Semester.ToString(), input.SelectedYear);
_courseService.AddCourseOffering(offering);
input.CourseOfferings.Add(offering);
}
catch (CourseOfferingExistsException)
{
// If the offering already exists, display error
TempData["Error"] = "Course offering already exists!";
}
return RedirectToAction("Add", input);
}