public ActionResult AddTheUserToTheCourse(AllUsersAndSomeCourseViewModel model)
{
if (ModelState.IsValid)
{
using (_db)
{
var newConnection = _db.userCourse.Create();
string theUserId = model.SelectedUserId;
newConnection.userId = theUserId;
if (theUserId.IsNullOrWhiteSpace())
{
return(Redirect("/Course/AddToCourse/" + model.TheCourse.Id));
}
var allUsersInCourse = _courseService.GetUsersInSomeCourse(model.TheCourse.Id);
foreach (var user in allUsersInCourse)
{
//Check if user is already in the course
if (theUserId == user.userId)
{
return(Redirect("/Course/AddToCourse/" + model.TheCourse.Id));
}
}
newConnection.userId = theUserId;
newConnection.courseId = model.TheCourse.Id;
_db.userCourse.Add(newConnection);
_db.SaveChanges();
}
}
//Redirect back to the same page
return(Redirect("/Course/AddToCourse/" + model.TheCourse.Id));
}
public ActionResult AddToCourse(int?id)
{
int realId;
if (id != null)
{
realId = (int)id;
}
else
{
throw new ArgumentNullException();
}
AllUsersAndSomeCourseViewModel allUsersAndSomeCourseViewModel = new AllUsersAndSomeCourseViewModel()
{
TheCourse = _courseService.GetCourseById(realId),
ListOfUsers = _db.Users.ToList(),
AllUsersInCourse = _courseService.GetUsersInSomeCourse(realId)
};
return(View(allUsersAndSomeCourseViewModel));
}