From edac69403fbf76ce709ddd530cd1af183c88f705 Mon Sep 17 00:00:00 2001
From: Dominik George <nik@naturalnet.de>
Date: Sat, 7 Sep 2019 16:11:33 +0200
Subject: [PATCH] Dimplify database constraint.
---
biscuit/apps/chronos/models.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/biscuit/apps/chronos/models.py b/biscuit/apps/chronos/models.py
index b6ec3a08..9a5d5290 100644
--- a/biscuit/apps/chronos/models.py
+++ b/biscuit/apps/chronos/models.py
@@ -133,7 +133,7 @@ class LessonSubstitution(SchoolRelated):
'lesson_period__period__weekday', 'lesson_period__period__period']
constraints = [
models.CheckConstraint(
- check=Q(cancelled=False, subject__isnull=False) | Q(cancelled=True, subject__isnull=True, room__isnull=True),
+ check=~Q(cancelled=True, subject__isnull=False),
name='either_substituted_or_cancelled'
)
]
--
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