From eb21ed7fcfb030b06a6942c8c534ce3fd6879c8d Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Fri, 27 May 2016 14:34:44 +0800
Subject: [PATCH] Allow options to be cleared.

---
 .../javascripts/discourse/components/combo-box.js.es6       | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse/components/combo-box.js.es6 b/app/assets/javascripts/discourse/components/combo-box.js.es6
index e023ad267cd..4dd19bd5885 100644
--- a/app/assets/javascripts/discourse/components/combo-box.js.es6
+++ b/app/assets/javascripts/discourse/components/combo-box.js.es6
@@ -65,7 +65,11 @@ export default Ember.Component.extend({
 
     const $elem = this.$();
     const minimumResultsForSearch = this.capabilities.isIOS ? -1 : 5;
-    $elem.select2({formatResult: this.comboTemplate, minimumResultsForSearch, width: 'resolve'});
+    $elem.select2({
+      formatResult: this.comboTemplate, minimumResultsForSearch,
+      width: 'resolve',
+      allowClear: true
+    });
 
     const castInteger = this.get('castInteger');
     $elem.on("change", e => {