[FIX] sale: add name_get for sale order line

Since procurement is dead, selecting a SO line
on task to reinvoice it get the list of so line
description in dropdown.
Define a 'name_get' method is required. So avoid
performance issue, we only customize it (order name
and product name) with a context key, like we did
for Sales Order.

addons/sale/models/sale.py

@@ -1036,6 +1036,27 @@ class SaleOrderLine(models.Model):
             )
             self.price_unit = self.env['account.tax']._fix_tax_included_price_company(self._get_display_price(product), product.taxes_id, self.tax_id, self.company_id)
 
+    @api.multi
+    def name_get(self):
+        if self._context.get('sale_show_order_product_name'):
+            result = []
+            for so_line in self:
+                name = '%s - %s' % (so_line.order_id.name, so_line.product_id.name)
+                result.append((so_line.id, name))
+            return result
+        return super(SaleOrderLine, self).name_get()
+
+    @api.model
+    def name_search(self, name='', args=None, operator='ilike', limit=100):
+        if self._context.get('sale_show_order_product_name'):
+            if operator in ('ilike', 'like', '=', '=like', '=ilike'):
+                domain = expression.AND([
+                    args or [],
+                    ['|', ('order_id.name', operator, name), ('product_id.name', operator, name)]
+                ])
+                return self.search(domain, limit=limit).name_get()
+        return super(SaleOrderLine, self).name_search(name, args, operator, limit)
+
     @api.multi
     def unlink(self):
         if self.filtered(lambda x: x.state in ('sale', 'done')):

addons/sale_timesheet/views/project_task_views.xml

@@ -29,7 +29,7 @@
                             string="Sales Order"/>
                 </xpath>
                 <field name="user_id" position="after">
-                    <field name="sale_line_id" string="Sales Order Item" attrs="{'invisible': [('partner_id', '=', False)]}" options='{"no_open": True, "no_create": True}'/>
+                    <field name="sale_line_id" string="Sales Order Item" attrs="{'invisible': [('partner_id', '=', False)]}" options='{"no_open": True, "no_create": True}' context="{'sale_show_order_product_name': True}"/>
                 </field>
             </field>
         </record>