playlist.rb in rspotify-1.19.0

- old
+ new

@@ -113,11 +113,11 @@
     end
 
     # Adds one or more tracks to a playlist in user's Spotify account. This method is only available when the
     # current user has granted access to the *playlist-modify-public* and *playlist-modify-private* scopes.
     #
-    # @param tracks [Array<Track>] Tracks to be added. Maximum: 100 per request
+    # @param tracks [Array<Track>, Array<String>] Tracks to be added. Either array of Tracks or strings where each string is a valid spotify track uri. Maximum: 100 per request
     # @param position [Integer, NilClass] The position to insert the tracks, a zero-based index. Default: tracks are appended to the playlist
     # @return [Array<Track>] The tracks added
     #
     # @example
     #           tracks = RSpotify::Track.search('Know', 30)
@@ -128,10 +128,15 @@
     #           playlist.tracks.first.name #=> "Somebody That I Used To Know"
     #
     #           playlist.add_tracks!(tracks, position: 20)
     #           playlist.tracks[20].name #=> "Somebody That I Used To Know"
     def add_tracks!(tracks, position: nil)
-      track_uris = tracks.map(&:uri).join(',')
+      track_uris = nil
+      if tracks.first.is_a? String
+        track_uris = tracks.join(',')
+      else
+        track_uris = tracks.map(&:uri).join(',')
+      end
       url = "#{@path}/tracks?uris=#{track_uris}"
       url << "&position=#{position}" if position
 
       response = User.oauth_post(@owner.id, url, {})
       @total += tracks.size