state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::Machine#action_hook

The method to hook into for triggering transitions when invoked.  By
default, this is the action configured for the machine.

Since the default hook technique relies on module inheritance, the
action must be defined in an ancestor of the owner classs in order for
it to be the action hook.

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-action_hook-for-pr

# Commit to git

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

# 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-action_hook-for-pr

hub pull-request

# Celebrate!