[FIX] ajuste en la creacion de la factura

models/sale_fast_confirm.py

@@ -31,12 +31,12 @@ class SaleOrder(models.Model):
         Confirms order and creates and validates invoice, confirms pickings.
         """
         for sale in self:
-            # Process order
             sale.action_button_confirm()
             inv_id = sale.action_invoice_create()
             if inv_id:
                 inv = self.env['account.invoice'].browse(inv_id)
-                # inv.signal_workflow('invoice_open')
+                inv.write({'date_invoice':sale.date_confirm})
+                inv.signal_workflow('invoice_open')
             for picking in sale.picking_ids:
                 picking.force_assign()
                 picking.action_done()

models/sale_fast_confirm.py~

@@ -0,0 +1,42 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    Odoo, Open Source Management Solution
+#
+#    Author: Andrius Laukavičius. Copyright: JSC NOD Baltic
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from openerp import models, api
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    @api.multi
+    def order_process_now(self):
+        """
+        Confirms order and creates and validates invoice, confirms pickings.
+        """
+        for sale in self:
+            # Process order
+            sale.action_button_confirm()
+            inv_id = sale.action_invoice_create()
+            if inv_id:
+                inv = self.env['account.invoice'].browse(inv_id)
+              #  inv.signal_workflow('invoice_open')
+            for picking in sale.picking_ids:
+                picking.force_assign()
+                picking.action_done()