From 1338a24da76615872af1085a37f3228423997068 Mon Sep 17 00:00:00 2001
From: FND <fnd@localhost.localdomain>
Date: Fri, 12 Dec 2014 09:30:00 +0100
Subject: [PATCH] ensured EntitySelector can cope with optional attribute

previously `data-entities="[]"` needed to be used when there was no
existing selection
---
 app/assets/javascripts/iqvoc/entityselect.js.erb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/assets/javascripts/iqvoc/entityselect.js.erb b/app/assets/javascripts/iqvoc/entityselect.js.erb
index c22f0552f..ac11f63ab 100644
--- a/app/assets/javascripts/iqvoc/entityselect.js.erb
+++ b/app/assets/javascripts/iqvoc/entityselect.js.erb
@@ -26,7 +26,8 @@ var EntitySelector = function(node) {
 
   this.indicator.css("visibility", "hidden");
 
-  var selection = $.map(this.el.data("entities"), function(entity, i) {
+  var selection = this.el.data("entities") || [];
+  selection = $.map(selection, function(entity, i) {
     return self.createEntity(entity);
   });
   selection = $('<ul class="entity_list" />').append(selection);