From cbf5c2ec1d8c0fe99f94bd21d3d16bcef4432ed9 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Fri, 8 Feb 2019 13:59:05 +0100
Subject: [PATCH] Fix ZeroDivisionError if a voucher tag is given to a voucher
 with max_usages=0

Fix PRETIXEU-V7
---
 src/pretix/control/views/vouchers.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pretix/control/views/vouchers.py b/src/pretix/control/views/vouchers.py
index 3325123a9..81f906587 100644
--- a/src/pretix/control/views/vouchers.py
+++ b/src/pretix/control/views/vouchers.py
@@ -105,7 +105,10 @@ class VoucherTags(EventPermissionRequiredMixin, TemplateView):
             redeemed=Sum('redeemed')
         )
         for t in tags:
-            t['percentage'] = int((t['redeemed'] / t['total']) * 100)
+            if t['total'] == 0:
+                t['percentage'] = 0
+            else:
+                t['percentage'] = int((t['redeemed'] / t['total']) * 100)
 
         ctx['tags'] = tags
         return ctx