Fixed: Album API query by foreignId only returns requested album

Setting the new 'includeAllArtistAlbums' will give the existing
behaviour of returning all albums for that artist

frontend/src/Album/Details/AlbumDetailsPageConnector.js

@@ -55,7 +55,10 @@ class AlbumDetailsPageConnector extends Component {
   populate = () => {
     const foreignAlbumId = this.props.foreignAlbumId;
     this.setState({ hasMounted: true });
-    this.props.fetchAlbums({ foreignAlbumId });
+    this.props.fetchAlbums({
+      foreignAlbumId,
+      includeAllArtistAlbums: true
+    });
   }
 
   unpopulate = () => {

src/Lidarr.Api.V1/Albums/AlbumModule.cs

@@ -42,6 +42,7 @@ namespace Lidarr.Api.V1.Albums
             var artistIdQuery = Request.Query.ArtistId;
             var albumIdsQuery = Request.Query.AlbumIds;
             var foreignIdQuery = Request.Query.ForeignAlbumId;
+            var includeAllArtistAlbumsQuery = Request.Query.IncludeAllArtistAlbums;
 
             if (!Request.Query.ArtistId.HasValue && !albumIdsQuery.HasValue && !foreignIdQuery.HasValue)
             {
@@ -57,9 +58,18 @@ namespace Lidarr.Api.V1.Albums
 
             if (foreignIdQuery.HasValue)
             {
-                int artistId = _albumService.FindById(foreignIdQuery.Value).ArtistId;
+                string foreignAlbumId = foreignIdQuery.Value.ToString();
 
-                return MapToResource(_albumService.GetAlbumsByArtist(artistId), false);
+                var album = _albumService.FindById(foreignAlbumId);
+
+                if (includeAllArtistAlbumsQuery.HasValue && Convert.ToBoolean(includeAllArtistAlbumsQuery.Value))
+                {
+                    return MapToResource(_albumService.GetAlbumsByArtist(album.ArtistId), false);
+                }
+                else
+                {
+                    return MapToResource(new List<Album> { album }, false);
+                }
             }
 
             string albumIdsValue = albumIdsQuery.Value.ToString();