git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@177 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 22 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/timestamp.rb b/activerecord/lib/active_record/timestamp.rb
new file mode 100644
index 0000000000..149113b950
--- /dev/null
+++ b/activerecord/lib/active_record/timestamp.rb
@@ -0,0 +1,22 @@
+module ActiveRecord
+  # Active Records will automatically record creation and/or update timestamps of database objects
+  # if fields of the names created_at/created_on or updated_at/updated_on are present.
+  module Timestamp 
+    def self.append_features(base) # :nodoc:
+      super
+      base.before_create :timestamp_before_create
+      base.before_update :timestamp_before_update
+    end    
+      
+    def timestamp_before_create
+      write_attribute("created_at", Time.now) if respond_to?(:created_at) && created_at.nil?
+      write_attribute("created_on", Time.now) if respond_to?(:created_on) && created_on.nil?
+      timestamp_before_update
+    end
+
+    def timestamp_before_update
+      write_attribute("updated_at", Time.now) if respond_to?(:updated_at)
+      write_attribute("updated_on", Time.now) if respond_to?(:updated_on)
+    end
+  end 
+end
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