state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::LoopbackMatcher#matches?

Checks whether the given value matches what the value originally was.
This value should be defined in the context.

== Examples

  matcher = StateMachine::LoopbackMatcher.instance
  matcher.matches?(:parked, :from => :parked)   # => true
  matcher.matches?(:parked, :from => :idling)   # => false

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/matcher.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--LoopbackMatcher-matches--for-pr

# Commit to git

git add lib/state_machine/matcher.rbgit commit -m "better docs for StateMachine::LoopbackMatcher#matches?"

# 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--LoopbackMatcher-matches--for-pr

hub pull-request

# Celebrate!