purchase_stock_usability: add supplier in tree view

stock_usability: allow to hide preferred route

purchase_stock_usability/models/stock_warehouse_orderpoint.py

@@ -0,0 +1,21 @@
+# Copyright 2015-2020 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).
+
+from odoo import fields, models
+
+
+class StockWarehouseOrderpoint(models.Model):
+    _inherit = 'stock.warehouse.orderpoint'
+
+    # Field needed to be able to search on supplier in the "Replenish" tree view
+    # I put it in purchase_stock_usability and not stock_usability
+    # because I wanted to use the field 'show_supplier' defined in purchase_stock
+    # (but I don't use it in the end because its computation returns False even
+    # on products with a Buy route) and I may also
+    # one day interact with supplier_id (M2O product.supplierinfo) defined in
+    # purchase_stock
+    seller_id = fields.Many2one(
+        related='product_id.product_tmpl_id.seller_ids.name',
+        store=True, string='Supplier',
+        )