Adding TimeZone#at and DateTime#to_f

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9042 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 6 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/core_ext/date_time/conversions.rb b/activesupport/lib/active_support/core_ext/date_time/conversions.rb
index 7e78550f7c..9b6d6e5e90 100644
--- a/activesupport/lib/active_support/core_ext/date_time/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/conversions.rb
@@ -78,6 +78,12 @@ module ActiveSupport #:nodoc:
         def xmlschema
           strftime("%Y-%m-%dT%H:%M:%S%Z")
         end if RUBY_VERSION < '1.9'
+        
+        # Converts self to a floating-point number of seconds since the Unix epoch 
+        def to_f
+          days_since_unix_epoch = self - ::DateTime.civil(1970)
+          (days_since_unix_epoch * 86_400).to_f
+        end
       end
     end
   end