properly rebuild cache after changing transformers

1 files changed, 11 insertions, 4 deletions

diff --git a/fietsboek/actions.py b/fietsboek/actions.py
index a5ba8a0..4974a2c 100644
--- a/fietsboek/actions.py
+++ b/fietsboek/actions.py
@@ -81,10 +81,6 @@ def add_track(
     dbsession.add(track)
     dbsession.flush()
 
-    # Best time to build the cache is right after the upload
-    track.ensure_cache(gpx_data)
-    dbsession.add(track.cache)
-
     # Save the GPX data
     LOGGER.debug("Creating a new data folder for %d", track.id)
     manager = data_manager.initialize(track.id)
@@ -99,6 +95,11 @@ def add_track(
     manager.compress_gpx(gpx.to_xml().encode("utf-8"))
     track.transformers = [[tfm.identifier(), tfm.parameters.dict()] for tfm in transformers]
 
+    # Best time to build the cache is right after the upload, but *after* the
+    # transformers have been applied!
+    track.ensure_cache(manager.decompress_gpx())
+    dbsession.add(track.cache)
+
     manager.engrave_metadata(
         title=track.title,
         description=track.description,
@@ -205,3 +206,9 @@ def execute_transformers(request: Request, track: models.Track):
 
     LOGGER.debug("Saving new transformers on %d", track.id)
     track.transformers = serialized
+
+    LOGGER.debug("Rebuilding cache for %d", track.id)
+    request.dbsession.delete(track.cache)
+    track.cache = None
+    track.ensure_cache(manager.decompress_gpx())
+    request.dbsession.add(track.cache)