after_timestamps
Summary
Plugin for Ruby on Rails that gives you a way to add a callback to the ActiveRecord callback chain that will be executed right after the record's timestamp columns are set, but before the record is actually saved to the database. This is useful if you want to do something with the timestamps, such as defaulting another time column to created_at, or rolling back a timestamp by a certain amount.
Example
Let's say you have a migration like this:
class AddFoo < ActiveRecord::Migration
def self.up
create_table :foo {|t| t.timestamps }
end
def self.down
drop_table :foo
end
end
And a model like this:
class Foo < ActiveRecord::Base
:roll_back_created_at_by_two_hours
:roll_back_updated_at_by_two_hours
private
def roll_back_created_at_by_two_hours
self.created_at -= 2.hours
end
def roll_back_updated_at_by_two_hours
self.updated_at -= 2.hours
end
end
Now if you say
Foo.create!
created_at
and updated_at
will be set, but 2 hours will be subtracted from them before they're put into the database.
Installation
- Run
gem install after_timestamps
(probably as root) - Add
config.gem 'after_timestamps'
to environment.rb - Optionally run
rake gems:build
Support
If you find any bugs with this plugin, feel free to:
- file a bug report in the Issues area on Github
- fork the project on Github and send me a pull request
- email me (firstname dot lastname at gmail dot com)
Author/License
(c) 2008-2010 Elliot Winkler. Released under the MIT license.