state_machine

https://github.com/pluginaweek/state_machine

Ruby

Adds support for creating state machines for attributes on any Ruby class

StateMachine::Transition#context

Gets a hash of the context defining this unique transition (including
event, from state, and to state).

== Example

  machine = StateMachine.new(Vehicle)
  transition = StateMachine::Transition.new(Vehicle.new, machine, :ignite, :parked, :idling)
  transition.context    # => {:on => :ignite, :from => :parked, :to => :idling}

Source | Google | Stack overflow

Edit

git clone [email protected]:pluginaweek/state_machine.git

cd state_machine

open lib/state_machine/transition.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--Transition-context-for-pr

# Commit to git

git add lib/state_machine/transition.rbgit commit -m "better docs for StateMachine::Transition#context"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-StateMachine--Transition-context-for-pr

hub pull-request

# Celebrate!