state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::Machine#states

A list of all of the states known to this state machine.  This will pull
states from the following sources:
* Initial state
* State behaviors
* Event transitions (:to, :from, and :except_from options)
* Transition callbacks (:to, :from, :except_to, and :except_from options)
* Unreferenced states (using +other_states+ helper)

These are sorted, by default, in the order in which they were referenced.

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/machine.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--Machine-states-for-pr

# Commit to git

git add lib/state_machine/machine.rbgit commit -m "better docs for StateMachine::Machine#states"

# 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--Machine-states-for-pr

hub pull-request

# Celebrate!