controller.rb

require 'sinatra'
require 'erb'
require 'json'
require 'net/http'

set :bind, '0.0.0.0'

get '/' do
 erb :index
end

# This is where you send the job to Scripted, and stash the job's id in your database. 
post '/create_scripted_job' do

 params = JSON.parse(request.body.read)
 # The params that the javasript api sends to the controller will look like this:
 
 # { 
 # "format_id" => "4f0ffb43d684123c5a00000b", 
 # "count" => "2", 
 # "form_fields" => 
 # {
 # "topic" => "10 Reasons to Use the Scripted JSAPI", 
 # "things_to_mention" => "Knockout, Javascript", 
 # "things_to_avoid" => "Religion, Politics, Backbone.js", 
 # "sample_blog" => "blog.scripted.com", 
 # "preferred_structure" => "Top 10 List", 
 # "keywords" => "javascript, restful, api", 
 # "additional_notes" => "Make it great!"
 # }
 # }
 
 # And all you need to do is append your business_id and key to those params.
 # You can find your business_id and key by logging in to Scripted
 # and navigating to scripted.com/api
 
 params['business_id'] = 'abc'
 params['key'] = '123'
 
 # Obviously don't send sandbox=true if you don't want it to be sandboxed.
 params['sandbox'] = true

 # Then send it to Scripted!
 req = Net::HTTP::Post.new('/jobs/create', initheader = { 'Content-Type' => 'application/json' })
 req.body = params.to_json
 response = Net::HTTP.new('scripted.com').start { |http| http.request(req) }
 
 # In order for the final javascript callback function to work, you must render the response body as JSON.
 content_type :json
 response.body
end