UsersController

user_delivery_agent.rb

class UserDeliveryAgent
  def initialize(email)
    @email = email
  end

  def deliver!
    if @email.present?
      puts "Email: #{@email}"
      true
    else
      false
    end
  end
end

users_controller.rb

class UsersController < ApplicationController
  def display
    agent = UserDeliveryAgent.new(params[:id])
    
    if agent.delay.deliver!
      render :json => { :result => "Success" }
    else
      render :json => { :result => "Failure" }, :status => 422
    end
  end 
end

AKA UserDeliveryAgents#create