From 559e9f3e76efe54b09be8ef118d461927cd96c10 Mon Sep 17 00:00:00 2001
From: "Andrea Grazioso (agr-odoo)" <agr@odoo.com>
Date: Fri, 12 Feb 2021 11:11:05 +0000
Subject: [PATCH] [FIX] point_of_sale: fix doubleclick of validate button

Open POS, add something to the order, go to checkout, add payment,
double click on validate

js error will popup

opw-2429523

closes odoo/odoo#66571

X-original-commit: c3aea6783b8bfb3af383ae881af247fa5507e99f
Signed-off-by: agr-odoo <agr-odoo@users.noreply.github.com>
---
 addons/point_of_sale/static/src/js/models.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 826cb57c088..fed39c6b5d8 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -946,8 +946,12 @@ exports.PosModel = Backbone.Model.extend({
 
         return new Promise(function (resolve, reject) {
             self.flush_mutex.exec(function () {
-                var flushed = self._flush_orders([self.db.get_order(order_id)], opts);
-
+                var order = self.db.get_order(order_id);
+                if (order){
+                    var flushed = self._flush_orders([order], opts);
+                } else {
+                    var flushed = Promise.resolve([]);
+                }
                 flushed.then(resolve, reject);
 
                 return flushed;