Question

I’m working on a Spotify app and trying to create a views.List object from some stored information in our database. On initial load, a POST is made to get the necessary info. I store this in localstorage so each subsequent request can avoid hitting the database and retrieve the object locally. What’s happening though is the List objects I create from localstorage data come up blank, while the POST requests work just fine.

Here is the snippet I’m using to create the list:

var temp_playlist = models.Playlist.fromURI(playlist.uri);
var tempList = new views.List(temp_playlist, function (track) {
    return new views.Track(track, views.Track.FIELD.STAR |
                views.Track.FIELD.NAME |
                views.Track.FIELD.ARTIST |
                views.Track.FIELD.DURATION);
});

document.getElementById("tracklist").appendChild(tempList.node);

playlist.uri in the first line is what I’m retrieving either from a POST or from localstorage. The resulting views.List object (tempList) looks identical in both cases except for tempList.node. The one retrieved from localstorage shows these values for innerHTML, innerText, outerHTML, and outerText in console.log:

innerHTML: "<div style="height: 400px; "></div>"
innerText: ""
outerHTML: "<div style="height: 400px; "></div>"
outerText: ""

Whereas the one retrieved via POST has the full data:

innerHTML: "<div style="height: 400px; "><a href="spotify:track:07CnMloaACYeFpwgZ9ihfg" class="sp-item sp-track sp-track-availability-0" title="Boss On The Boat by Tosca" data-itemindex="0" data-viewindex="0" style="-webkit-transform: translateY(0px); ">....
innerText: "3Boss On The BoatTosca6:082....

and so forth..

Any help would be greatly appreciated

Answer 1

Using, the local storage, I did it this way :

sp = getSpotifyApi(1);
var m = sp.require("sp://import/scripts/api/models");
var v = sp.require("sp://import/scripts/api/views");

var pl;
pl = m.Playlist.fromURI(uri);
var player = new v.Player();
player.track = pl.get(0);
player.context = pl;
var list = new v.List(pl);
XXXXX.append($(list.node));

Hope, it will help, as it’s working for me