state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::Path#can_walk_to?

Determines whether it's possible to walk to the given transition from
the current path.  A transition can be walked to if:
* It has not been recently walked and
* If a target is specified, it has not been walked to twice yet

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/path.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--Path-can_walk_to--for-pr

# Commit to git

git add lib/state_machine/path.rbgit commit -m "better docs for StateMachine::Path#can_walk_to?"

# 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--Path-can_walk_to--for-pr

hub pull-request

# Celebrate!