public ActionResult Save(int?id)
{
FormStudentViewModel viewModel = new FormStudentViewModel
{
Courses = context.Course.ToList(), // lista de cursos
Student = id.HasValue ?
context.Student.Find(id.Value) // buscar estudiante
: new Student(), // nuevo estudiante
};
return(View(viewModel));
}
public ActionResult Save(FormStudentViewModel viewModel)
{
if (viewModel.Student.Id == 0)
{
// agregar nuevo estudiante
context.Student.Add(viewModel.Student);
}
else
{
// edita estudiante (Attach)
// y notifica (EntityState) que el modelo sufrió un cambio
context.Student.Attach(viewModel.Student);
context.Entry(viewModel.Student).State = EntityState.Modified;
}
context.SaveChanges();
return(RedirectToAction("Index"));
}
