state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::Branch#match_query

Verifies that all configured requirements (event and state) match the
given query.  If a match is found, then a hash containing the
event/state requirements that passed will be returned; otherwise, nil.

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/branch.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--Branch-match_query-for-pr

# Commit to git

git add lib/state_machine/branch.rbgit commit -m "better docs for StateMachine::Branch#match_query"

# 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--Branch-match_query-for-pr

hub pull-request

# Celebrate!