Fix: Clear metadata cache when the filename(s) change (#5957)

* Update doc modified time upon move and rename

* Clear the cached metadata if the filename(s) have been changed

---------

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src/documents/caching.py

@@ -189,6 +189,11 @@ def refresh_metadata_cache(
     cache.touch(doc_key, timeout)
 
 
+def clear_metadata_cache(document_id: int) -> None:
+    doc_key = get_metadata_cache_key(document_id)
+    cache.delete(doc_key)
+
+
 def get_thumbnail_modified_key(document_id: int) -> str:
     """
     Builds the key to store a thumbnail's timestamp

src/documents/signals/handlers.py

@@ -22,6 +22,7 @@ from django.utils import timezone
 from filelock import FileLock
 
 from documents import matching
+from documents.caching import clear_metadata_cache
 from documents.classifier import DocumentClassifier
 from documents.consumer import parse_doc_title_w_placeholders
 from documents.file_handling import create_source_path_directory
@@ -434,7 +435,9 @@ def update_filename_and_move_files(sender, instance: Document, **kwargs):
             Document.objects.filter(pk=instance.pk).update(
                 filename=instance.filename,
                 archive_filename=instance.archive_filename,
+                modified=timezone.now(),
             )
+            clear_metadata_cache(instance.pk)
 
         except (OSError, DatabaseError, CannotMoveFilesException) as e:
             logger.warning(f"Exception during file handling: {e}")