From 5f3df70bd95f0eaeab8e7982503df75683a03848 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sat, 6 Jan 2024 22:56:46 +0100
Subject: [PATCH] Return children length only if children field is loaded

Closes #12906
---
 sao/src/view/tree.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sao/src/view/tree.js b/sao/src/view/tree.js
index df7ce45c75..7909de8f53 100644
--- a/sao/src/view/tree.js
+++ b/sao/src/view/tree.js
@@ -1327,7 +1327,11 @@
             if (!row || !this.children_field) {
                 return this.rows.length;
             }
-            return row.record._values[this.children_field].length;
+            if (row.record.is_loaded(this.children_field)) {
+                return row.record.field_get_client(this.children_field).length;
+            } else {
+                return 0;
+            }
         },
         set_cursor: function(new_, reset_view) {
             var i, root_group, path, row_path, row, column;