From 2d93f18514abaa194b70012b2e01bd80eead1bef Mon Sep 17 00:00:00 2001
From: Hangzhi Yu <hangzhi@protonmail.com>
Date: Thu, 20 Jun 2024 18:29:22 +0200
Subject: [PATCH] Only consider LessonEvent objects when searching for existing
substitutions
---
aleksis/apps/chronos/models.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/aleksis/apps/chronos/models.py b/aleksis/apps/chronos/models.py
index 7f4b3595..8cb324f5 100644
--- a/aleksis/apps/chronos/models.py
+++ b/aleksis/apps/chronos/models.py
@@ -1640,7 +1640,7 @@ class LessonEvent(CalendarEvent):
)
if affected_teachers.exists():
- existing_substitutions = reference_obj.amended_by.filter(
+ existing_substitutions = reference_obj.amended_by.instance_of(cls).filter(
datetime_start=event["DTSTART"].dt,
datetime_end=event["DTEND"].dt,
)
--
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