public PlaylistBaseViewModel PlaylistEdit(PlaylistEditTracksViewModel playlist)
{
var o = ds.Playlists.Include("Tracks")
.SingleOrDefault(e => e.PlaylistId == playlist.PlaylistId);
if (o == null)
{
// Problem - object was not found, so return
return(null);
}
else
{
// Update the object with the incoming values
// First, clear out the existing collection
o.Tracks.Clear();
// Then, go through the incoming items
// For each one, add to the fetched object's collection
foreach (var item in playlist.TrackIds)
{
var a = ds.Tracks.Find(item);
o.Tracks.Add(a);
}
// Save changes
ds.SaveChanges();
return(mapper.Map <Playlist, PlaylistBaseViewModel>(o));
}
}
public PlaylistWithDetailViewModel PlaylistEditTracks(PlaylistEditTracksViewModel newItem)
{
var obj = ds.Playlists.Include("Tracks").SingleOrDefault(t => t.PlaylistId == newItem.PlaylistId);
if (obj == null)
{
return(null);
}
else
{
// update values except identifiers and navigation properties
ds.Entry(obj).CurrentValues.SetValues(newItem);
// update navigation properties
obj.Tracks.Clear();
foreach (var trackId in newItem.TrackIds)
{
var t = ds.Tracks.Find(trackId);
obj.Tracks.Add(t);
}
ds.SaveChanges();
return(mapper.Map <Playlist, PlaylistWithDetailViewModel>(obj));
}
}
public ActionResult Edit(int?id, PlaylistEditTracksViewModel newItem)
{
// Validate the input
if (!ModelState.IsValid)
{
// Our "version 1" approach is to display the "edit form" again
return(RedirectToAction("Edit", new { id = newItem.PlaylistId }));
}
if (id.GetValueOrDefault() != newItem.PlaylistId)
{
// This appears to be data tampering, so redirect the user away
return(RedirectToAction("Index"));
}
// Attempt to do the update
var editedItem = m.PlaylistEdit(newItem);
if (editedItem == null)
{
//if there is a problem, go to the edit page
return(RedirectToAction("Edit", new { id = newItem.PlaylistId }));
}
else
{
// Show the details view, which will have the updated data
return(RedirectToAction("Details", new { id = newItem.PlaylistId }));
}
}
public ActionResult Edit(int?id, PlaylistEditTracksViewModel newItem)
{
// Validate the input
if (!ModelState.IsValid)
{
return(RedirectToAction("edit", new { id = newItem.PlaylistId }));
}
if (id.GetValueOrDefault() != newItem.PlaylistId)
{
return(RedirectToAction("index"));
}
var editedItem = m.PlaylistEditTracks(newItem);
if (editedItem == null)
{
return(RedirectToAction("edit", new { id = newItem.PlaylistId }));
}
else
{
return(RedirectToAction("details", new { id = newItem.PlaylistId }));
}
}
