From bd4990dd21f011c78ec9ef04102b078c41e720be Mon Sep 17 00:00:00 2001
From: Ryan Sonnek <ryan@socialcast.com>
Date: Tue, 15 Jun 2010 12:49:39 -0500
Subject: [PATCH] fix exception when field is nil

---
 lib/acts_as_stripped.rb       | 2 +-
 test/acts_as_stripped_test.rb | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/acts_as_stripped.rb b/lib/acts_as_stripped.rb
index b10fd67..3d6244c 100644
--- a/lib/acts_as_stripped.rb
+++ b/lib/acts_as_stripped.rb
@@ -22,7 +22,7 @@ module InstanceMethods
     private
     def strip_fields
       strippable_attributes.each do |attr|
-        self[attr.to_s].strip!
+        self[attr.to_s].strip! unless self[attr.to_s].nil?
       end
     end
     def strippable_attributes
diff --git a/test/acts_as_stripped_test.rb b/test/acts_as_stripped_test.rb
index a60d346..b32999a 100644
--- a/test/acts_as_stripped_test.rb
+++ b/test/acts_as_stripped_test.rb
@@ -53,6 +53,14 @@ class ActsAsStrippedTest < Test::Unit::TestCase
     setup do
       @post = Post.new
     end
+    should 'not fail if title is nil' do
+      @post.title = nil
+      assert_nothing_raised do
+        @post.save!
+      end
+      assert_nil @post.title
+    end
+
     should 'strip whitespace only from title' do
       @post.title = '  hello world  '
       @post.body = '  awesome  '