Add module purchase_stock_usability

Port purchase_usability to v12

purchase_usability/partner.py

@@ -1,30 +1,11 @@
-# -*- coding: utf-8 -*-
-# © 2017 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
+# Copyright 2017-2019 Akretion France
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import models, fields, api
+from odoo import models, fields
 
 
 class ResPartner(models.Model):
     _inherit = 'res.partner'
 
     purchase_warn = fields.Selection(track_visibility='onchange')
-
-    # Fix an access right issue when accessing partner form without being
-    # a member of the purchase/User group
-    @api.multi
-    def _purchase_invoice_count(self):
-        poo = self.env['purchase.order']
-        aio = self.env['account.invoice']
-        for partner in self:
-            try:
-                partner.purchase_order_count = poo.search_count(
-                    [('partner_id', 'child_of', partner.id)])
-            except Exception:
-                pass
-            try:
-                partner.supplier_invoice_count = aio.search_count([
-                    ('partner_id', 'child_of', partner.id),
-                    ('type', '=', 'in_invoice')])
-            except Exception:
-                pass