From b610e2a8123cfbfbfa57e67a5186cf9a250becb8 Mon Sep 17 00:00:00 2001
From: Simon Lejeune <sle@openerp.com>
Date: Mon, 11 Dec 2017 18:55:16 +0100
Subject: [PATCH] [FIX] purchase: po line and force_save

Two fiels are set readonly according to the status of the purchase
order: product_id and product_uom_id. They become readonly once the
purchase order is confirmed, but according to the options a user is
still able to add purchase order line. Make sure to always send the
required fields to the server.

Fixes #21519
---
 addons/purchase/views/purchase_views.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/addons/purchase/views/purchase_views.xml b/addons/purchase/views/purchase_views.xml
index eaaec54f341..ac69a1054fb 100644
--- a/addons/purchase/views/purchase_views.xml
+++ b/addons/purchase/views/purchase_views.xml
@@ -210,7 +210,7 @@
                                     <field name="currency_id" invisible="1"/>
                                     <field name="state" invisible="1"/>
                                     <field name="sequence" widget="handle"/>
-                                    <field name="product_id" attrs="{'readonly': [('state', 'in', ('purchase', 'to approve','done', 'cancel'))]}" context="{'partner_id':parent.partner_id, 'quantity':product_qty,'uom':product_uom, 'company_id': parent.company_id}"/>
+                                    <field name="product_id" attrs="{'readonly': [('state', 'in', ('purchase', 'to approve','done', 'cancel'))]}" context="{'partner_id':parent.partner_id, 'quantity':product_qty,'uom':product_uom, 'company_id': parent.company_id}" force_save="1"/>
                                     <field name="name"/>
                                     <field name="date_planned"/>
                                     <field name="company_id" groups="base.group_multi_company" options="{'no_create': True}"/>
@@ -219,7 +219,7 @@
                                     <field name="product_qty"/>
                                     <field name="qty_received" invisible="not context.get('show_purchase', True)"/>
                                     <field name="qty_invoiced" invisible="not context.get('show_purchase', True)"/>
-                                    <field name="product_uom" groups="product.group_uom" attrs="{'readonly': [('state', 'in', ('purchase', 'done', 'cancel'))]}"/>
+                                    <field name="product_uom" groups="product.group_uom" attrs="{'readonly': [('state', 'in', ('purchase', 'done', 'cancel'))]}" force_save="1"/>
                                     <field name="price_unit"/>
                                     <field name="taxes_id" widget="many2many_tags" domain="[('type_tax_use','=','purchase')]" context="{'default_type_tax_use': 'purchase'}" options="{'no_create': True}"/>
                                     <field name="price_subtotal" widget="monetary"/>