From faeff098fe3d95a1287040fd14584171e2911ce2 Mon Sep 17 00:00:00 2001
From: Tim Richardson <tim@tim-richardson.net>
Date: Sat, 15 Feb 2014 07:52:43 +1100
Subject: [PATCH] rows.export_to_csv_file assumes the function field.represent
 takes only one argument, which was causing a ticket with virtua fields

---
 gluon/dal.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gluon/dal.py b/gluon/dal.py
index 638afe99..704d4e38 100644
--- a/gluon/dal.py
+++ b/gluon/dal.py
@@ -9746,7 +9746,7 @@ class FieldVirtual(object):
         (self.name, self.f) = (name, f) if f else ('unknown', name)
         self.type = ftype
         self.label = label or self.name.capitalize().replace('_',' ')
-        self.represent = lambda v,r:v
+        self.represent = lambda v,r=None:v
         self.formatter = IDENTITY
         self.comment = None
         self.readable = True