From e48e77e0222292176cd9f68658dd54524f582d9b Mon Sep 17 00:00:00 2001
From: Josh Susser <josh@hasmanythrough.com>
Date: Mon, 18 Aug 2008 15:56:37 -0700
Subject: coerce blank strings to nil values for boolean and integer fields

[#860 state:resolved]
---
 .../connection_adapters/abstract/schema_definitions.rb              | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb')

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
index 98016ddab5..75032efe57 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
@@ -138,7 +138,11 @@ module ActiveRecord
 
         # convert something to a boolean
         def value_to_boolean(value)
-          TRUE_VALUES.include?(value)
+          if value.is_a?(String) && value.blank?
+            nil
+          else
+            TRUE_VALUES.include?(value)
+          end
         end
 
         # convert something to a BigDecimal
-- 
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