notification subscriber

notsub.rb

class User < ApplicationRecord
  after_commit :send_notification

  def send_notification
    puts "sendnotification"
    ActiveSupport::Notifications.instrument("updated.user", { user: self })
  end
end

# app/subscribers/user_event_subscriber.rb
class UserEventSubscriber < ActiveSupport::Subscriber
  def updated(event)
    user = event.payload[:user]
    puts "[SUBSCRIBER] Event: #{event.name}"
    puts "[SUBSCRIBER] Update user #{user.id} - #{user.email}"
  end

  # attach_to :user for use attach inside klass, require the class in subscriber initializer
  # example : require Rails.root.join("app/subscribers/user_event_subscriber")
end

# attach to class in initializer
UserEventSubscriber.attach_to :user