написал ретрив

server/proj/audio/views.py

@@ -16,6 +16,18 @@ class SongViewSet(ViewSet):
         serializer = SongSerializer(queryset, many=True)
         return Response(serializer.data)
     
+    def retrieve(self, request, pk=None):
+        user_pk = request.user.pk
+        song_obj = get_object_or_404(Song, azura_id=pk).pk
+        queryset = FavoriteSong.objects.filter(user=user_pk, song=song_obj).exists()
+        if queryset:
+            serializer = FavoriteSongSerializer(queryset=queryset)
+            resp = serializer.data
+            resp.update(is_favorite=True)
+            return Response(serializer.data, status=status.HTTP_201_CREATED)
+        else:
+            return Response('Трека нет... Стёпа извини...', status=status.HTTP_400_BAD_REQUEST)
+
     @action(detail=False, methods=['post'], schema=SongSchema())
     def create_song(self, request):
         song = Song.objects.filter(azura_id = request.data['azura_id'])
@@ -23,7 +35,6 @@ class SongViewSet(ViewSet):
             data = {
                 "song": song[0].id, 
                 "user": request.user.pk
-                
             } 
             serializer_1 = FavoriteSongSerializer(data=data)
             if serializer_1.is_valid():
@@ -51,7 +62,6 @@ class SongViewSet(ViewSet):
                 "song": song[0].id, 
                 "user": request.user.pk
             }
-
             serializer_1 = FavoriteSongSerializer(data=data)
             if serializer_1.is_valid():
                 serializer_1.save()