Modified is always going to be set

src/documents/plugins/helpers.py

@@ -108,7 +108,7 @@ class DocumentsStatusManager(BaseStatusManager):
         self,
         *,
         document_id: int,
-        modified: str | None = None,
+        modified: str,
         owner_id: int | None = None,
         users_can_view: list[int] | None = None,
         groups_can_view: list[int] | None = None,

src/documents/signals/handlers.py

@@ -781,9 +781,7 @@ def send_websocket_document_updated(
     with DocumentsStatusManager() as status_mgr:
         status_mgr.send_document_updated(
             document_id=document.id,
-            modified=DRF_DATETIME_FIELD.to_representation(document.modified)
-            if document.modified
-            else None,
+            modified=DRF_DATETIME_FIELD.to_representation(document.modified),
             owner_id=doc_overrides.owner_id,
             users_can_view=doc_overrides.view_users,
             groups_can_view=doc_overrides.view_groups,