Add a link from incoming picking to PO

purchase_usability_extension/__openerp__.py

@@ -26,6 +26,7 @@ for any help or question about this module.
     'depends': ['purchase'],
     'data': [
         'purchase_view.xml',
+        'stock_view.xml',
         'supplierinfo_view.xml',
     ],
     'active': False,

purchase_usability_extension/purchase.py

@@ -30,6 +30,15 @@ class PurchaseOrder(models.Model):
     partner_ref = fields.Char(track_visibility='onchange')
 
 
+class StockPicking(models.Model):
+    _inherit = 'stock.picking'
+
+    # Field added to have a clickable link from picking to PO
+    purchase_id = fields.Many2one(
+        related='move_lines.purchase_line_id.order_id', readonly=True,
+        string='Purchase Order')
+
+
 class ResPartner(models.Model):
     _inherit = 'res.partner'
 

purchase_usability_extension/stock_view.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2017 Akretion (http://www.akretion.com/)
+  @author: Alexis de Lattre <alexis.delattre@akretion.com>
+  License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+-->
+
+<openerp>
+<data>
+
+<record id="view_picking_form" model="ir.ui.view">
+    <field name="name">purchase_usability.stock.picking.form</field>
+    <field name="model">stock.picking</field>
+    <field name="inherit_id" ref="stock.view_picking_form"/>
+    <field name="arch" type="xml">
+        <field name="origin" position="after">
+            <field name="purchase_id" attrs="{'invisible': [('picking_type_code', '!=', 'incoming')]}"/>
+        </field>
+    </field>
+</record>
+
+
+</data>
+</openerp>