asked on

How do I override the db.SaveChanges method that MVC scaffolding built?

Hi,

I'm new to MVC. I built a model and let MVC do scaffolding. It works great, but I need to know how to override the @Html.EditorFor(model => model.PROPERTY) behavior...

For instance, I created a dropdown on my Edit page, like so:
Album: @Html.DropDownList("ddAlbum", @Model.Album)
Where the MVC scaffolding had:
@Html.EditorFor(model => model.Album)

How do I save the value from my dropdownlist to save in the db.SaveChanges() method? In the following scaffolded code:

if (ModelState.IsValid)
{
db.Entry(song).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}

Bob Learned

Is there a post back that calls the db.SaveChanges? Is that code in a controller action method?

JT_SIRO

ASKER

Yes, it's in the postback Edit Action of my controller. Like so:

//
// POST: /Songs/Edit/5
[HttpPost]
public ActionResult Edit(Song song)
{
// UPLOAD SONG PHOTO TO C:\SongBank\Images\
foreach (string upload in Request.Files)
{
if (!Request.Files[upload].HasFile()) continue;
string path = AppDomain.CurrentDomain.BaseDirectory + "Content/SongPhotos";
string filename = Path.GetFileName(Request.Files[upload].FileName);
Request.Files[upload].SaveAs(Path.Combine(path, filename));
}

if (ModelState.IsValid)
{
db.Entry(song).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
return View(song);
}

ASKER CERTIFIED SOLUTION

Bob Learned

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

JT_SIRO

ASKER

Thanks!