From a9fac2ea2d593df7163c72d58647f71b8c54911f Mon Sep 17 00:00:00 2001
From: Christophe Matthieu <chm@odoo.com>
Date: Thu, 16 Jun 2016 15:21:30 +0200
Subject: [PATCH] [FIX] web: required attribute on one2many field

Require One2many field without any line must show an error like many2many fields.

issue 11782
---
 addons/web/static/src/js/view_form.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 27e201b2e3b..3c6bd5f1a1a 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -4337,6 +4337,9 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
     commit_value: function() {
         return this.save_any_view();
     },
+    is_false: function () {
+        return _(this.dataset.ids).isEmpty();
+    },
     save_any_view: function() {
         var view = this.get_active_view();
         if (view) {