Module: StateMachine::Integrations::ActiveModel::Observer

Defined in:
lib/state_machine/integrations/active_model/observer.rb

Overview

Adds support for invoking callbacks on ActiveModel observers with more than one argument (e.g. the record and the state transition). By default, ActiveModel only supports passing the record into the callbacks.

For example:

class VehicleObserver < ActiveModel::Observer
  # The default behavior: only pass in the record
  def after_save(vehicle)
  end

  # Custom behavior: allow the transition to be passed in as well
  def after_transition(vehicle, transition)
    Audit.log(vehicle, transition)
  end
end

Instance Method Summary (collapse)

Instance Method Details

- (Object) update_with_transition(observer_update)



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# File 'lib/state_machine/integrations/active_model/observer.rb', line 22

def update_with_transition(observer_update)
  method = observer_update.method
  send(method, *observer_update.args) if respond_to?(method)
end