public async Task <IActionResult> OnPostAsync(int?id)
{
string userId = _userManager.GetUserId(User);
Subject subjectToEdit = await _context.Subjects
.Where(su => su.UserID == userId)
.Where(su => su.ID == id)
.SingleOrDefaultAsync();
if (subjectToEdit == null)
{
DangerMessage = "Subject not found.";
return(RedirectToPage("./Index"));
}
SubjectVM = new StudentOrSubjectEditOrCreate();
bool modelDidUpdate = await TryUpdateModelAsync <StudentOrSubjectEditOrCreate>(SubjectVM);
if (ModelState.IsValid && modelDidUpdate)
{
List <string> otherUsedNames = await _context.Subjects
.Where(su => su.ID != id)
.Where(su => su.UserID == userId)
.Select(su => su.Name)
.ToListAsync();
if (otherUsedNames.Contains(SubjectVM.Name))
{
DangerMessage = "This Subject name is already used.";
return(RedirectToPage());
}
subjectToEdit.Name = SubjectVM.Name;
subjectToEdit.IsActive = SubjectVM.IsActive;
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
DangerMessage = "Changes did not save correctly. Please try again.";
return(RedirectToPage());
}
public async Task <IActionResult> OnPostAsync()
{
string userId = _userManager.GetUserId(User);
SubjectVM = new StudentOrSubjectEditOrCreate();
bool modelDidUpdate = await TryUpdateModelAsync <StudentOrSubjectEditOrCreate>(SubjectVM);
if (modelDidUpdate && ModelState.IsValid)
{
List <string> usedNames = _context.Subjects
.Where(su => su.UserID == userId)
.Select(s => s.Name)
.ToList();
if (usedNames.Contains(SubjectVM.Name))
{
DangerMessage = "This Subject name is already used.";
return(RedirectToPage());
}
Subject newSubject = new Subject
{
UserID = userId,
Name = SubjectVM.Name,
IsActive = SubjectVM.IsActive
};
_context.Subjects.Add(newSubject);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
DangerMessage = "New Subject did not save correctly. Please try again";
return(RedirectToPage());
}
public async Task <IActionResult> OnGetAsync(int?id)
{
string userId = _userManager.GetUserId(User);
Subject subjectToEdit = await _context.Subjects
.Where(su => su.UserID == userId)
.Where(su => su.ID == id)
.SingleOrDefaultAsync();
if (subjectToEdit == null)
{
DangerMessage = "Subject not found.";
return(RedirectToPage("./Index"));
}
SubjectVM = new StudentOrSubjectEditOrCreate()
{
Name = subjectToEdit.Name,
IsActive = subjectToEdit.IsActive
};
return(Page());
}