From bb80768558a4ddd755305e7b8b7925fef9d2771d Mon Sep 17 00:00:00 2001
From: Jake Dallimore <jake@moodle.com>
Date: Tue, 31 Jan 2017 11:24:13 +0800
Subject: [PATCH] MDL-35978 comments: fix for comments block which has no
 toggler

---
 comment/comment.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/comment/comment.js b/comment/comment.js
index 5cc0fae6542..bdcc7bc9236 100644
--- a/comment/comment.js
+++ b/comment/comment.js
@@ -358,7 +358,9 @@ M.core_comment = {
                     if (img) {
                         img.set('src', M.util.image_url('t/expanded', 'core'));
                     }
-                    commenttoggler.setAttribute('aria-expanded', 'true');
+                    if (commenttoggler) {
+                        commenttoggler.setAttribute('aria-expanded', 'true');
+                    }
                 } else {
                     // hide
                     container.setStyle('display', 'none');
@@ -372,7 +374,9 @@ M.core_comment = {
                     if (ta) {
                         ta.set('value','');
                     }
-                    commenttoggler.setAttribute('aria-expanded', 'false');
+                    if (commenttoggler) {
+                        commenttoggler.setAttribute('aria-expanded', 'false');
+                    }
                 }
                 if (ta) {
                     //toggle_textarea.apply(ta, [false]);