Add purchase buyer module

purchase_order_buyer/README.rst

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+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+   :alt: License: AGPL-3
+
+====================
+Purchase Order Buyer
+====================
+
+Adds a buyer on the Purchase Order. (Like a vendor on sales).
+
+A prefered buyer can be set on the supplier.
+
+Usage
+=====
+
+To use this module, you need to go to Purchase > Purchase Order: there a new field "Buyer"
+It will use buy default the user_id of the supplier and fallback to current user.
+
+Credits
+=======
+
+
+Contributors
+------------
+
+* Raphaël Reverdy <raphael.reverdy@akretion.com>
+
+Maintainer
+----------
+
+Akretion

purchase_order_buyer/__init__.py

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+# -*- coding: utf-8 -*-
+from . import models

purchase_order_buyer/__manifest__.py

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+# -*- coding: utf-8 -*-
+# Copyright 2018 Akretion (https://akretion.com)
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+{
+    "name": "Purchase Order Buyer",
+    "summary": "Add a buyer (user) on POs",
+    "version": "10.0.1.1.0",
+    "author": "Akretion",
+    "website": "https://github.com/akretion/odoo-usability",
+    "category": "Purchases",
+    "depends": ["purchase"],
+    "data": [
+        'views/purchase_order.xml',
+    ],
+    "license": "AGPL-3",
+    "installable": True,
+    "application": False,
+}

purchase_order_buyer/models/__init__.py

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+# -*- coding: utf-8 -*-
+
+from . import purchase_order

purchase_order_buyer/models/purchase_order.py

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+# -*- coding: utf-8 -*-
+# Copyright 2018 Raphael Reverdy https://akretion.com
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, fields, models
+
+
+class PurchaseOrder(models.Model):
+    _inherit = 'purchase.order'
+
+    user_id = fields.Many2one(
+        'res.users',
+        string='Buyer', index=True,
+        track_visibility='onchange',
+        default=lambda self: self.env.user)
+
+    @api.multi
+    @api.onchange('partner_id')
+    def onchange_partner_id(self):
+        """Update the user_id (buyer)"""
+        for rec in self:
+            if rec.partner_id and rec.partner_id.user_id:
+                user_id = rec.partner_id.user_id.id
+            else:
+                user_id = self.env.user
+            return rec.update({
+                'user_id': user_id,
+            })

purchase_order_buyer/views/purchase_order.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+        <record id="purchase_order_tree" model="ir.ui.view">
+            <field name="name">purchase.order.tree</field>
+            <field name="model">purchase.order</field>
+            <field name="inherit_id" ref="purchase.purchase_order_tree"/>
+            <field name="arch" type="xml">
+                <field name="partner_id" position="after">
+                    <field name="user_id" />
+                </field>
+            </field>
+        </record>
+
+        <record id="purchase_order_form" model="ir.ui.view">
+            <field name="name">purchase.order.form</field>
+            <field name="model">purchase.order</field>
+            <field name="inherit_id" ref="purchase.purchase_order_form"/>
+            <field name="arch" type="xml">
+                <field name="partner_id" position="after">
+                    <field name="user_id" />
+                </field>
+            </field>
+        </record>
+
+</odoo>