diff --git a/mod/forum/amd/src/pin_toggle.js b/mod/forum/amd/src/pin_toggle.js
new file mode 100644
index 00000000000..86dff2ce026
--- /dev/null
+++ b/mod/forum/amd/src/pin_toggle.js
@@ -0,0 +1,80 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This module is the highest level module for the calendar. It is
+ * responsible for initialising all of the components required for
+ * the calendar to run. It also coordinates the interaction between
+ * components by listening for and responding to different events
+ * triggered within the calendar UI.
+ *
+ * @module     mod_forum/pin_toggle
+ * @package    mod_forum
+ * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([
+    'jquery',
+    'core/ajax',
+    'core/str',
+    'core/templates',
+    'core/notification',
+    'mod_forum/repository',
+    'mod_forum/selectors',
+], function(
+    $,
+    Ajax,
+    Str,
+    Templates,
+    Notification,
+    Repository,
+    Selectors
+) {
+
+    /**
+     * Registery event listeners for the pin toggle.
+     *
+     * @param {object} root The calendar root element
+     */
+    var registerEventListeners = function(root) {
+        root.on('click', Selectors.pin.toggle, function(e) {
+            var toggleElement = $(this);
+            var forumid = toggleElement.data('forumid');
+            var discussionid = toggleElement.data('discussionid');
+            var pinstate = toggleElement.data('targetstate');
+            var includetext = toggleElement.data('includetext');
+
+            Repository.togglePin(forumid, discussionid, pinstate, includetext)
+                .then(function(context) {
+                    return Templates.render('mod_forum/discussion_pin_toggle', context);
+                })
+                .then(function(html, js) {
+                    return Templates.replaceNode(toggleElement, html, js);
+                })
+                .then(function() {
+                    return Notification.fetchNotifications();
+                })
+                .fail(Notification.exception);
+
+            e.preventDefault();
+        });
+    };
+
+    return {
+        init: function(root) {
+            registerEventListeners(root);
+        }
+    };
+});
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