From 44bf56c77cbffcb166190dc274232ba1acff0ed4 Mon Sep 17 00:00:00 2001
From: FalcoBolger <vta@openerp.com>
Date: Thu, 10 Jul 2014 11:26:19 +0200
Subject: [PATCH] [FIX] event_sale: do not crash when empty field product in
 ticket types lines

---
 addons/event_sale/event_sale.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/addons/event_sale/event_sale.py b/addons/event_sale/event_sale.py
index 90cac8168ec..ff924eb4ddc 100644
--- a/addons/event_sale/event_sale.py
+++ b/addons/event_sale/event_sale.py
@@ -224,6 +224,8 @@ class event_ticket(osv.osv):
     ]
 
     def onchange_product_id(self, cr, uid, ids, product_id=False, context=None):
+        if not product_id:
+            return {'value': {}}
         return {'value': {'price': self.pool.get("product.product").browse(cr, uid, product_id).list_price or 0}}