public IActionResult Update(SubjectUpdate subjectUpdate)
{
if (subjectUpdate == null)
{
return(RedirectToActionPermanent("Index"));
}
if (!ModelState.IsValid)
{
return(View("Update", subjectUpdate));
}
using (var db = new SchoolContext())
{
var subject = db.Subjects.SingleOrDefault(s => s.Id == subjectUpdate.Id);
if (subject == null)
{
return(RedirectToActionPermanent("Index"));
}
subject.Id = subjectUpdate.Id;
subject.SubjectName = subjectUpdate.Name;
subject.TeacherId = subjectUpdate.TeacherId;
db.Subjects.Update(subject);
db.SaveChanges();
return(RedirectToActionPermanent("Index"));
}
}
// Update specific item
public SubjectUpdate UpdateSubject(SubjectUpdate updatedSubject)
{
var p = ds.Subjects.Find(updatedSubject.Id);
if (p == null)
{
return(null);
}
else
{
// For the object fetched from the data store,
// set its values to those provided
// (the method ignores missing properties, and navigation properties)
ds.Entry(p).CurrentValues.SetValues(updatedSubject);
ds.SaveChanges();
return(updatedSubject);
}
}
