From bc7e1591bd1d515db699e7a4077c0b33e274049b Mon Sep 17 00:00:00 2001
From: Joachim Lusiardi <joachim@lusiardi.de>
Date: Wed, 23 Jun 2021 08:29:35 +0200
Subject: [PATCH] fix sorting for regular costs

---
 app/tools.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/tools.py b/app/tools.py
index 7936153..e7ff34a 100644
--- a/app/tools.py
+++ b/app/tools.py
@@ -204,7 +204,9 @@ def compute_lower_limits_for_new_pitstop(
 
 
 def pitstop_service_key(x):
-    return x.date, x.odometer
+    # if the entry got no odometer (regular costs!) then we assume it's okay
+    # to have regular cost at a virtual odometer of 0 on that day.
+    return x.date, x.odometer or 0
 
 
 def get_event_line_for_vehicle(vehicle):