fix(back):update denormalization table on upload update and trigger denormalization on bulk update of uploads

api/funkwhale_api/music/models.py

@@ -1567,7 +1567,13 @@ def update_batch_status(sender, instance, **kwargs):
 @receiver(post_save, sender=Upload)
 def update_denormalization_track_actor(sender, instance, created, **kwargs):
     if (
-        created
+        (
+            created
+            or (
+                kwargs.get("update_fields", None)
+                and "library" in kwargs.get("update_fields")
+            )
+        )
         and settings.MUSIC_USE_DENORMALIZATION
         and instance.track_id
         and instance.import_status == "finished"

api/funkwhale_api/music/serializers.py

@@ -569,8 +569,11 @@ class UploadBulkUpdateListSerializer(serializers.ListSerializer):
                     f"Upload with uuid {uuid} does not exist"
                 )
             upload.library = privacy_level_map[data["privacy_level"]]
+            # bulk_update skip post-save signal (raw sql db query), we need the to update the denormalization table
+            # could optimize and work on a bulk denormalization table update. In the meantime we do it one by one
+            upload.save(update_fields=["library"])
             objs.append(upload)
-        models.Upload.objects.bulk_update(objs, ["library"])
+
         return objs