From d4c2d77bba2152acf7bcf144a987559c3abe405a Mon Sep 17 00:00:00 2001
From: rohitwaghchaure <rohitw1991@gmail.com>
Date: Tue, 26 Sep 2017 13:27:06 +0530
Subject: [PATCH] [fix] POS not working if user clicks on back button from form
 view (#10912)

---
 erpnext/selling/page/point_of_sale/point_of_sale.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/erpnext/selling/page/point_of_sale/point_of_sale.js b/erpnext/selling/page/point_of_sale/point_of_sale.js
index d4b7eba107a..ec1a2926218 100644
--- a/erpnext/selling/page/point_of_sale/point_of_sale.js
+++ b/erpnext/selling/page/point_of_sale/point_of_sale.js
@@ -20,6 +20,10 @@ frappe.pages['point-of-sale'].on_page_load = function(wrapper) {
 	});
 };
 
+frappe.pages['point-of-sale'].refresh = function(wrapper) {
+	cur_frm = wrapper.pos.frm;
+}
+
 erpnext.pos.PointOfSale = class PointOfSale {
 	constructor(wrapper) {
 		this.wrapper = $(wrapper).find('.layout-main-section');
@@ -478,6 +482,8 @@ class POSCart {
 	}
 
 	update_taxes_and_totals() {
+		if (!this.frm.doc.taxes) { return; }
+
 		const currency = this.frm.doc.currency;
 		this.frm.refresh_field('taxes');