Up And At Them!

This gem provides a method for performing atomic transactions with the capability to rollback. Note that this is for any general Ruby operation and does not replace ActiveRecord::Rollback.

Add this line to your application's Gemfile:

gem 'up_and_at_them'

And then execute:

$ bundle

Or install it yourself as:

$ gem install up_and_at_them

Create a Transaction which contains all of your commits. Note that the Transaction will run as soon as it is initialized.

UpAndAtThem::Transaction[
  UpAndAtThem::Commit.new { puts "do something!" }.on_rollback { "undo something!" },
  UpAndAtThem::Commit.new { puts "do something else!" }.on_rollback { "undo something else!" }
]

The UpAndAtThem::Transaction array can contain any classes that respond to #call and #rollback. The UpAndAtThem::Commit class allows you to define those methods easily:

UpAndAtThem::Commit.new { "this block will execute on #call" }.on_rollback { "this block will execute on #rollback" }
UpAndAtThem::Commit.new { "calling on_rollback is not necessary" }

See the tests for other example Commit actions within a Transaction.

1. Fork it ( https://github.com/metova/up_and_at_them/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request