How to update Model when binding to a ViewModel?

Question

I have an [HttpPost] action method signature like this:

[HttpPost]
public ActionResult Edit(ExistingPostViewModel model)
{
   // Save the edited Pos         


        

Answer 1

Not sure if this will help, but it is working for me. I have my underlying domain table as a Visitor Object. My viewmodel contains the Visitor Object plus a couple of IEnumerables for dropdowns.

    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Edit(int id)

    {
        Visitor Visitor = new Visitor();
        Visitor = db.Visitors.FirstOrDefault(v => v.VisitorID == id);

        UpdateModel(Visitor, "Visitor");

        db.SaveChanges();
        return RedirectToAction("Index");

    }

The UpdateModel works off my viewmodel because of the "Visitor" string telling it what values to compare.