gistfile1.rb

class Record < ActiveRecord::Base
  
  state_machine :state, initial: :state_one do
    state :state_one,
          :state_two
    
    before_transition to: :state_two,
                      do: :state_two_event
  end
  
  state_machine :public_state, attribute: :state do
    event(:move_to_state_two) { transition :state_one => :state_two }
  end
    
  def state_two_event
    true
  end
  
end