fix sorting for regular costs

app/forms/service.py

@@ -6,7 +6,7 @@ from .checks import *
 
 
 class CreateServiceForm(FlaskForm):
-    date = DateField('Date of Pitstop')
+    date = DateField('Date of Service')
     odometer = IntegerField('Odometer (km)', validators=[odometer_date_check])
     costs = DecimalField('Costs (€, overall)', places=2, validators=[costs_check])
     description = TextAreaField('Description', validators=[Length(1, 4096)])
@@ -72,4 +72,4 @@ class EditServiceForm(FlaskForm):
             'litres': 'Litres must be higher than 0.01 L.',
             'costs': 'Costs must be higher than 0.01 €.'
         }
-        return messages
+        return messages

app/routes/service.py

@@ -14,6 +14,7 @@ from ..tools import (
     db_log_delete,
     get_event_line_for_vehicle,
     get_latest_pitstop_for_vehicle,
+    get_users_active_vehicle,
 )
 from .. import app, db
 

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):