Unrecognised item type error when using fields on GetPlaylistItems

[thechubbypanda]

I'm calling

spotify.Client.GetPlaylistItems(ctx, id, spotify.Fields("items(track(id))"))

and I get the error:

unrecognized item type: 

I'm assuming this is because it's expecting to decode the rest of the fields that don't exist.

I'd expect it to just give me back tracks with only the id populated.

[TimHi]

I'm confused what spotify.Fields("items(track(id))") is in your case, are you passing a valid spotify playlist ID?

[thechubbypanda]

Yeah, the playlistID is valid. The call works fine without the Fields parameter. See the code here.

I'm trying to use this endpoint as follows:

[TimHi]

I see, the unmarshaling of the JSON expects the item type, using the filter its missing in func (t *PlaylistItemTrack) UnmarshalJSON.

Also it doesnt work for filters like spotify.Fields("items(track(name))").

I guess when using a Field it can't be expected that the PlaylistItemTrack matches the received JSON.

[thechubbypanda]

So is there something we can do about this or is it a lost cause?
Do other endpoints play nicely with the fields param?