Examples of ConsumerPublisher

gistfile1.rb

class ConsumerChangesObserver < ActiveRecord::Observer
  observe :consumer, :address_record, :consumer_enrollment

  def after_update(record)
    ConsumerPublisher.publish_change(record)
  end
end

class SomeController < FmsController
  def some_action
    consumer = Consumer.find(params[:consumer_id])
    consumer.died!(params[:date])

    ConsumerPublisher.consumer_died(consumer)
  end
end

class ConsumerPublisher
  extend Observable

  def self.send_notification(consumer_id, values)
    changed
    notify_observers(consumer_id, values)
  end

  def self.publish_change(record)
    if record.is_a?(Consumer) && record.has_some_meaningful_change?
      values = {
        first_name: record.first_name,
        last_name: record.last_name,
        date_of_birth: record.date_of_birth
      }
      send_notification(record.id, values)
    else
      # Other stuff
    end
  end

  def self.consumer_died(consumer)
    values = {
      date_of_death: consumer.date_of_death
    }
    send_notification(consumer.id, values)
  end
end