state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::State#context

Defines a context for the state which will be enabled on instances of
the owner class when the machine is in this state.

This can be called multiple times.  Each time a new context is created,
a new module will be included in the owner class.

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/state.rb

Contribute

# Make a new branch

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

# Commit to git

git add lib/state_machine/state.rbgit commit -m "better docs for StateMachine::State#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--State-context-for-pr

hub pull-request

# Celebrate!