Null pointer exception while album list loads (Huge library)

[Atanamo]

Hi!

Yet another problem with huge music library.
I let scan all files over night - which worked so far, don't understand the problem of issue #6 (Huge library makes Audios angry!)...
But when I open the albums list of Audios, it first takes a while, then getting a javascript error.

Here the exception as thrown to Chrome debug console:

Uncaught TypeError: Cannot read property 'length' of undefined   -   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:4 

x.extend.each           @   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:4
(anonymous function)    @   app.js?v=a90372135c621c1a65a28e03ca7480d9:502
x.extend.each           @   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:4
$.ajax.success          @   app.js?v=a90372135c621c1a65a28e03ca7480d9:405
c                       @   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:4
p.fireWith              @   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:4
k                       @   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:6
r                       @   jquery.min.js?v=a90372135c621c1a65a28e03ca7480d9:6

Jumping into the code of app.js (line 502) shows these lines:

    var aSongs=[];
    $.each(songs[album.id],function(ii,songs){
        aSongs[ii] = $this.loadSongsRow(songs, album.name);
    });

So, what seems to be undefined here, is songs[album.id].
Probably the error can be catched by checking this expression appropriately.

Because, if the error occures, the whole view is broken - due to the fact that init was not finished.
E.g. I can click on the albums created so far, but the list of songs does not show up...

---

My environment:

• OwnCloud 8.2.0
• Music library has about 900 albums of 250 artists, over 10000 songs in total

---

Also, after a bit of debugging...
For the album, on which the error occures, there's indeed missing an entry in songs.
When I skip the foreach-loop for this album, the view finishes building up correctly!

So I wonder, if the album is empty or similar.
But I can play the album in Audios and from the files view of Owncloud. So what is looped there anyway? :-)

EDIT:
I've created a pull request, which fixes the issue...

---

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.