From 3e5f80b0e36375a68cdb08b5b57fbc12cd85f7f1 Mon Sep 17 00:00:00 2001
From: Thorsten Eckel <te@znuny.com>
Date: Tue, 6 Dec 2016 14:05:19 +0100
Subject: [PATCH] Follow up: Pull request #497 - Added check for
 extract_numbers parameter.

---
 app/models/cti/caller_id.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/models/cti/caller_id.rb b/app/models/cti/caller_id.rb
index 561712a19..dc09c98a1 100644
--- a/app/models/cti/caller_id.rb
+++ b/app/models/cti/caller_id.rb
@@ -178,6 +178,7 @@ returns
 
     def self.extract_numbers(text)
       # see specs for example
+      return [] if !text.is_a?(String)
       text.scan(/([\d|\s|\-|\(|\)]{6,26})/).map do |match|
         normalize_number(match[0])
       end