From 6860db61f516b813af624d38b47fef0bf983539c Mon Sep 17 00:00:00 2001 From: David Heinemeier Hansson Date: Thu, 16 Dec 2004 16:23:59 +0000 Subject: Renamed Mixins to Acts to resemble the change from include ActiveRecord::Mixins::List to acts_as_list and renamed @@default_error_messagess to @@default_error_messages git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@190 5ecf4fe2-1ee6-0310-87b1-e25e094e27de --- activerecord/lib/active_record/acts/touch.rb | 34 ++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 activerecord/lib/active_record/acts/touch.rb (limited to 'activerecord/lib/active_record/acts/touch.rb') diff --git a/activerecord/lib/active_record/acts/touch.rb b/activerecord/lib/active_record/acts/touch.rb new file mode 100644 index 0000000000..baf217542a --- /dev/null +++ b/activerecord/lib/active_record/acts/touch.rb @@ -0,0 +1,34 @@ +module ActiveRecord + module Mixins + # Including this mixins will record when objects of the class are created in a datetime column called "created_at" + # and when its updated in another datetime column called "updated_at". + # + # class Bill < ActiveRecord::Base + # include ActiveRecord::Mixins::Touch + # end + # + # bill = Bill.create("amount" => 100) + # bill.created_at # => Time.now at the moment of Bill.create + # bill.updated_at # => Time.now at the moment of Bill.create + # + # bill.update_attribute("amount", 150) + # bill.created_at # => Time.now at the moment of Bill.create + # bill.updated_at # => Time.now at the moment of bill.update_attribute + module Touch + def self.append_features(base) + super + + base.before_create :touch_on_create + base.before_update :touch_on_update + end + + def touch_on_create + self.updated_at = (self.created_at ||= Time.now) + end + + def touch_on_update + self.updated_at = Time.now + end + end + end +end \ No newline at end of file -- cgit v1.2.3