state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::MatcherHelpers#same

Represents a state that matches the original +from+ state.  This is useful
for defining transitions which are loopbacks.

== Examples

  class Vehicle
    state_machine do
      event :ignite
        transition [:idling, :first_gear] => same
      end
    end
  end

In the above example, +same+ will match whichever the from state is.  In
the case of the +ignite+ event, it is essential the same as the following:

  transition :parked => :parked, :first_gear => :first_gear

Source | Google | Stack overflow

Edit

git clone [email protected]:pluginaweek/state_machine.git
cd state_machine
open lib/state_machine/matcher_helpers.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-StateMachine--MatcherHelpers-same-for-pr

# Commit to git
git add lib/state_machine/matcher_helpers.rbgit commit -m "better docs for StateMachine::MatcherHelpers#same"

# 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--MatcherHelpers-same-for-pr
hub pull-request

# Celebrate!