From 23d19545a7295cef91669d613902be7cc87dd56f Mon Sep 17 00:00:00 2001
From: Ludovic Stephan <ludovic.stephan@ens.fr>
Date: Wed, 5 Apr 2017 22:23:56 -0300
Subject: [PATCH] Add back root_sort

---
 kfet/static/kfet/js/kfet.api.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index 32d8d9f6..0f6cd91b 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -690,7 +690,7 @@ class ModelForest {
      * @param {Object} [options] Options for element render method
      */
     display($container, templates, options) {
-        this.roots.sort(this.roots[0].constructor.compare);
+        this.roots.sort(this.constructor.root_sort);
         for (let root of this.roots) {
             $container.append(this.render_element(root, templates, options));
         }
@@ -782,8 +782,6 @@ class ArticleList extends APIModelForest {
     /**
      * Default structure for ArticleList instances
      * @abstract
-     * @default <tt>{'article': Article,
-                'category': ArticleCategory}</tt>
      */
     static get structure() {
         return {
@@ -800,6 +798,14 @@ class ArticleList extends APIModelForest {
                     
     }
 
+    /**
+     * Comparison function to sort roots
+     * @default <tt>{@link Models.ArticleCategory.compare|ArticleCategory.compare}</tt>
+     */
+    static get root_sort() {
+        return ArticleCategory.compare;
+    }
+
     /**
      * Default url to get ArticlList data
      * @abstract