From a6f1ad6b6deef22244b13d73c3aac491bb45c395 Mon Sep 17 00:00:00 2001
From: Sander Roosendaal <roosendaalsander@gmail.com>
Date: Thu, 26 Oct 2017 18:25:13 +0200
Subject: [PATCH] added messaging

---
 rowers/views.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rowers/views.py b/rowers/views.py
index ad43fcf3..f467f3ca 100644
--- a/rowers/views.py
+++ b/rowers/views.py
@@ -3080,6 +3080,9 @@ def otwrankings_view(request,theuser=0,
         'Delta':delta,
         'CP':cpvalue,
         })
+
+    if powerdf.empty:
+        messages.info(request,'Your calculations are running in the background. Please reload this page.')
     
     powerdf = powerdf[powerdf['CP']>0]
     powerdf.dropna(axis=0,inplace=True)