From c8cb5b74c09a37334a6e29c00962b3bec5257555 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Mon, 4 Mar 2019 18:57:08 +0100
Subject: [PATCH] Do not fill pygal chart with None value

pygal call max on the values so it raises a TypeError when comparing the
number with None on Python3.

issue8147
review50791002
---
 sale_reporting.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sale_reporting.py b/sale_reporting.py
index 28c1d30d8b..7bfa980571 100644
--- a/sale_reporting.py
+++ b/sale_reporting.py
@@ -167,7 +167,7 @@ class Abstract(ModelSQL):
         name = name[:-len('_trend')]
         if pygal:
             chart = pygal.Line()
-            chart.add('', [getattr(ts, name) if ts else None
+            chart.add('', [getattr(ts, name) if ts else 0
                     for ts in self.time_series_all])
             return chart.render_sparktext()