state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::NodeCollection#at

Gets the node at the given index.

  states = StateMachine::NodeCollection.new
  states << StateMachine::State.new(machine, :parked)
  states << StateMachine::State.new(machine, :idling)
  
  states.at(0).name    # => :parked
  states.at(1).name    # => :idling

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/node_collection.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--NodeCollection-at-for-pr

# Commit to git

git add lib/state_machine/node_collection.rbgit commit -m "better docs for StateMachine::NodeCollection#at"

# 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--NodeCollection-at-for-pr

hub pull-request

# Celebrate!