From 4a1c548e5b08175cde2ca2f39b4e0fb7b8b12586 Mon Sep 17 00:00:00 2001
From: Austin Burdine <acburdine@gmail.com>
Date: Tue, 14 Mar 2017 05:05:59 -0500
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20ensure=20tag=20property=20exists?=
 =?UTF-8?q?=20before=20trying=20to=20trim=20it=20(#578)?=
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no issue
- fixes error thrown when you focus in/focus out of a field in the tags
editor without entering anything
---
 ghost/admin/app/controllers/settings/tags/tag.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ghost/admin/app/controllers/settings/tags/tag.js b/ghost/admin/app/controllers/settings/tags/tag.js
index c03ec25acf..882bb47148 100644
--- a/ghost/admin/app/controllers/settings/tags/tag.js
+++ b/ghost/admin/app/controllers/settings/tags/tag.js
@@ -18,7 +18,9 @@ export default Controller.extend({
         let tag = this.get('tag');
         let currentValue = tag.get(propKey);
 
-        newValue = newValue.trim();
+        if (newValue) {
+            newValue = newValue.trim();
+        }
 
         // Quit if there was no change
         if (newValue === currentValue) {