UBL Integration Naming UBL-File

ext/custom-addons/dp_custom/models/account.py

@@ -89,6 +89,12 @@ class AccountInvoice(models.Model):
 
     sent_by_mail = fields.Boolean(string='Per EMail versandt',track_visibility='onchange')
 
+    @api.multi
+    def get_ubl_filename(self, version='2.1'):
+        self.ensure_one()
+
+        """This method is designed to be inherited"""
+        return 'Invoice_%s-UBL-%s.xml' % (self.number, version)
 
     @api.multi
     @api.onchange('partner_shipping_id')