public ActionResult Edit(int?id, VehicleEdit newItem)
{
// Validate the input
if (!ModelState.IsValid)
{
// Our "version 1" approach is to display the "edit form" again
return(RedirectToAction("edit", new { id = newItem.Id }));
}
if (id.GetValueOrDefault() != newItem.Id)
{
// This appears to be data tampering, so redirect the user away
return(RedirectToAction("index"));
}
// Attempt to do the update
var editedItem = m.VehicleEditMSRP(newItem);
if (editedItem == null)
{
// There was a problem updating the object
// Our "version 1" approach is to display the "edit form" again
return(RedirectToAction("edit", new { id = newItem.Id }));
}
else
{
// Show the details view, which will have the updated data
return(RedirectToAction("details", new { id = newItem.Id }));
}
}
public VehicleWithDetail VehicleEditMSRP(VehicleEdit newItem)
{
// Attempt to fetch the object
// When editing an object with a required to-one association,
// MUST fetch its associated object
var o = ds.Vehicles.Include("Manufacturer")
.SingleOrDefault(v => v.Id == newItem.Id);
if (o == null)
{
// Problem - item was not found, so return
return(null);
}
else
{
// Update the object with the incoming values
ds.Entry(o).CurrentValues.SetValues(newItem);
ds.SaveChanges();
// Prepare and return the object
return(mapper.Map <VehicleWithDetail>(o));
}
}