From 5dd452554e2920e61b70f8381e2dd5ccf834d764 Mon Sep 17 00:00:00 2001
From: Tim Richardson <tim@tim-richardson.net>
Date: Fri, 21 Jun 2013 03:21:13 +1000
Subject: [PATCH] allow compute fields to depend on compute fields defined
 earlier

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

diff --git a/gluon/dal.py b/gluon/dal.py
index 7d0190aa..194413a4 100644
--- a/gluon/dal.py
+++ b/gluon/dal.py
@@ -8542,6 +8542,8 @@ class Table(object):
                 # try compute it
                 try:
                     new_fields[name] = (ofield,ofield.compute(row))
+                    __,fields[name] = new_fields[name]  #the value is the second element of the tuple
+                    row = Row(fields)  #allow later compute fields to refer to this value
                 except (KeyError, AttributeError):
                     # error sinlently unless field is required!
                     if ofield.required: