From e2f9e707c3b66bf839442ea677c1db82ef0e8a34 Mon Sep 17 00:00:00 2001
From: echarp <manu@echarp.org>
Date: Sat, 27 Apr 2019 15:39:06 +0200
Subject: [PATCH] Manage offset without a specific name

---
 app/views/events/index.ics.haml | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/app/views/events/index.ics.haml b/app/views/events/index.ics.haml
index f39491c6..9fd89dcb 100644
--- a/app/views/events/index.ics.haml
+++ b/app/views/events/index.ics.haml
@@ -5,9 +5,13 @@
   cal = Icalendar::Calendar.new
   @events.each do |event|
     tzid = event.region.tzid
-    tz = TZInfo::Timezone.get tzid
-    timezone = tz.ical_timezone event.start_time
-    cal.add_timezone timezone
+    begin
+      tz = TZInfo::Timezone.get tzid
+      timezone = tz.ical_timezone event.start_time
+      cal.add_timezone timezone
+    rescue TZInfo::InvalidTimezoneIdentifier
+      # No need to add this tz
+    end
 
     cal.event do |e|
       e.dtstamp     = Icalendar::Values::DateTime.new event.decision_time, tzid: tzid