From aac30e3b16dd6ab73700277edd18b11a6fe5873a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alejandro=20Garci=CC=81a=20Iglesias?=
 <ale.garciaiglesias@gmail.com>
Date: Thu, 22 Nov 2018 12:47:42 -0300
Subject: [PATCH] Fix 'cannot get property filter of undefined' error

---
 src/angular-sortable-view.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/angular-sortable-view.js b/src/angular-sortable-view.js
index 76e08bc..554cbbb 100644
--- a/src/angular-sortable-view.js
+++ b/src/angular-sortable-view.js
@@ -88,6 +88,7 @@
 						return getSortableElements(mapKey);
 					}, function(collection){
 						isGrid = false;
+						if (!collection) return;
 						var array = collection.filter(function(item){
 							return !item.container;
 						}).map(function(item){