state_machine

https://github.com/pluginaweek/state_machine

Ruby

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

StateMachine::Machine#initialize_state

Initializes the state on the given object.  Initial values are only set if
the machine's attribute hasn't been previously initialized.

Configuration options:
* <tt>:force</tt> - Whether to initialize the state regardless of its
  current value
* <tt>:to</tt> - A hash to set the initial value in instead of writing
  directly to the object

Source | Google | Stack overflow

Edit

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

cd state_machine

open lib/state_machine/machine.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-StateMachine--Machine-initialize_state-for-pr

# Commit to git

git add lib/state_machine/machine.rbgit commit -m "better docs for StateMachine::Machine#initialize_state"

# 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--Machine-initialize_state-for-pr

hub pull-request

# Celebrate!