state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::TransitionCollection#run_callbacks

Runs each transition's callbacks recursively.  Once all before callbacks
have been executed, the transitions will then be persisted and the
configured actions will be run.

If any transition fails to run its callbacks, :halt will be thrown.

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/transition_collection.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--TransitionCollection-run_callbacks-for-pr

# Commit to git

git add lib/state_machine/transition_collection.rbgit commit -m "better docs for StateMachine::TransitionCollection#run_callbacks"

# 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--TransitionCollection-run_callbacks-for-pr

hub pull-request

# Celebrate!