Polling bank account status

account.rb

class Account < ActiveRecord::Base
  enum status: %i(processing processed errored)
end

accounts_controller.rb

class BankAccountsController < ApplicationController
  def status
    @account = Account.select(:id, :status).find(params[:id])
    render json: { status: @account.status }
  end
end

index.html.erb

<% if Rails.env.development? %>
  <%= link_to "Poll Account Status", '#', id: 'status', data: {
    status_url: status_path @account
  } %>
<% end %>

poller.coffee

class Poller
  @request: (url) ->
    new Poller(url).request()

  constructor: (@url) ->

  request: =>
    $.getJSON @url, @response

  response: (json) =>
    switch json.status
      when 'processing' then do @processing
      when 'processed'  then do @processed
      when 'errored'    then do @errored

  processing: ->
    console.log 'processing'
    do @poll

  processed: ->
    console.log 'processed'

  errored: ->
    console.log 'errored'

  poll: ->
    setTimeout @request, 1000

$(document).on 'click', '#status', ->
  Poller.request @dataset.statusUrl

  false

Terminal.coffee

Started GET "/bank_account/status?id=11" for 127.0.0.1 at 2014-04-08 10:40:21 -0700
Processing by BankAccountsController#status as JSON
  Parameters: {"id"=>"11"}
  BankAccount Load (0.2ms)  SELECT  "bank_accounts"."id", "bank_accounts"."status" FROM "bank_accounts"  WHERE "bank_accounts"."id" = $1 LIMIT 1  [["id", 11]]
Completed 200 OK in 1ms (Views: 0.1ms | ActiveRecord: 0.2ms)


Started GET "/bank_account/status?id=11" for 127.0.0.1 at 2014-04-08 10:40:22 -0700
Processing by BankAccountsController#status as JSON
  Parameters: {"id"=>"11"}
  BankAccount Load (0.2ms)  SELECT  "bank_accounts"."id", "bank_accounts"."status" FROM "bank_accounts"  WHERE "bank_accounts"."id" = $1 LIMIT 1  [["id", 11]]
Completed 200 OK in 1ms (Views: 0.1ms | ActiveRecord: 0.2ms)


Started GET "/bank_account/status?id=11" for 127.0.0.1 at 2014-04-08 10:40:23 -0700
Processing by BankAccountsController#status as JSON
  Parameters: {"id"=>"11"}
  BankAccount Load (0.2ms)  SELECT  "bank_accounts"."id", "bank_accounts"."status" FROM "bank_accounts"  WHERE "bank_accounts"."id" = $1 LIMIT 1  [["id", 11]]
Completed 200 OK in 2ms (Views: 0.2ms | ActiveRecord: 0.2ms)