Better way to route?

gistfile1.rb

  post :index do
    
    #determine the querystring which is NOT restful and route to approriate view
    #URL looks like this http://localhost/app?create&id=10
    url = env['REQUEST_URI']
    uri = Addressable::URI.parse(url).query_values.to_hash

    #Provide Server Info text per spec
    if uri.has_key?("create")
      tmp_dir = File.join(Padrino.root, 'tmp')
      raw_data = request.body.read.force_encoding('UTF-8')
      file_name = File.join(tmp_dir, params[:docId])
     
      # #save out file
      File.open("#{file_name}.pdf", 'w') do |f|
        f.write(raw_data)
        status 200
      end
    end
      # File.open("#{file_name}-params.txt", 'w') do |f|
      #   f.write(params.to_s)
    
  end