переписал сериализатор

server/proj/audio/serializers.py

@@ -7,13 +7,17 @@ class SongSerializer(serializers.ModelSerializer):
         fields = ('id', 'unique_id', 'azura_id', 'title', 'artist', 'album', 'genre', 'art')
 
 class FavoriteSongSerializer(serializers.ModelSerializer):
+    song_list = serializers.SerializerMethodField()
     class Meta:
         model = FavoriteSong    
-        fields = ('id', 'song', 'user')
+        fields = ('id', 'song', 'user', 'song_list')
 
-    def to_representation(self, instance):
+    def get_song(self, favorite_song):
+        song_list = Song.objects.get(id=favorite_song.song_id)
+        return SongSerializer(song_list, many=True).data
+    """ def to_representation(self, instance):
         rep = super().to_representation(instance)
         rep["song"] = SongSerializer(
             instance.song).data
-        return rep
+        return rep """