TinyStateMachine
Yet another state machine for Ruby.
Installation
Add this line to your application's Gemfile:
gem 'tiny_state_machine'
And then execute:
$ bundle
Or install it yourself as:
$ gem install tiny_state_machine
Usage
sm = TinyStateMachine::Machine.new :in_store do |sm|
sm.event :buy, :in_store => :new
sm.event :use, :new => :used
sm.event :use, :used => :used
sm.event :break, :used => :broken
sm.event :fix, :broken => :used
sm.event :earthquake, :any => :destroyed
sm.on_state_change do |event, from_state, to_state|
puts "new state = #{to_state}"
end
end
sm.trigger(:buy)
# new state = new
# => :new
sm.trigger(:buy)
# TinyStateMachine::InvalidEvent: Invalid event 'buy' from state 'new'
sm.trigger(:use)
# new state = used
# => :used
sm.state
# => :used
sm.trigger(:use)
# new state = used
# => :used
# some events can come from :any state
sm.trigger(:earthquake)
# new state = destroyed
# => :destroyedTests
bundle install # to install rspec
bundle exec rspec # to run testsContributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
Author
Copyright (c) 2014 Geoffroy Montel (@g_montel) MIT License