From 323f019c0da4936a16062255f595031e4adb2c52 Mon Sep 17 00:00:00 2001
From: Ludovic Stephan <ludovic.stephan@ens.fr>
Date: Sun, 9 Apr 2017 13:35:01 -0300
Subject: [PATCH] Check if children is non empty

---
 kfet/static/kfet/js/kfet.api.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index 19be0607..78289fa3 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -668,7 +668,7 @@ class ModelForest {
 
         var children = this.get_children(node);
 
-        if (children) {
+        if (children && children.length) {
             if (struct_data.child_sort)
                 children.sort(struct_data.child_sort);
             else