[15.0][FIX]purchase_allowed_product: search product by vendor reference

Author: manuelregidor

purchase_allowed_product/__manifest__.py

@@ -11,7 +11,7 @@
     "website": "https://github.com/OCA/purchase-workflow",
     "author": "Akretion, Odoo Community Association (OCA)",
     "license": "AGPL-3",
-    "depends": ["purchase"],
+    "depends": ["purchase", "base_view_inheritance_extension"],
     "data": [
         "views/res_partner_views.xml",
         "views/account_move_views.xml",

purchase_allowed_product/views/purchase_order_views.xml

@@ -20,19 +20,19 @@
                 expr="//field[@name='order_line']/tree/field[@name='product_id']"
                 position="attributes"
             >
-                <attribute name="context">{
-                    'restrict_supplier_id': parent.partner_id,
-                    'use_only_supplied_product': parent.use_only_supplied_product
-                }</attribute>
+                <attribute name="context" operation="update">
+                    {'restrict_supplier_id': parent.partner_id,
+                    'use_only_supplied_product': parent.use_only_supplied_product}
+                </attribute>
             </xpath>
             <xpath
                 expr="//field[@name='order_line']/form//field[@name='product_id']"
                 position="attributes"
             >
-                <attribute name="context">{
-                    'restrict_supplier_id': parent.partner_id,
-                    'use_only_supplied_product': parent.use_only_supplied_product
-                }</attribute>
+                <attribute name="context" operation="update">
+                    {'restrict_supplier_id': parent.partner_id,
+                    'use_only_supplied_product': parent.use_only_supplied_product}
+                </attribute>
             </xpath>
         </field>
     </record>