# Meu controlador

class HostingController < ApplicationController

def index
end

def step_one
      @customer = Customer.new
  end


  def save_step_one
    if request.post?

    unless params[:domain].blank?
      @msg = Customer.check_domain(params[:domain])
      session[:domain] = params[:domain]
    end
      else
      redirect_to :action => "step_one"
      end

  end


  def step_two
    session[:customer] = @customer
  end

  def save_step_two
    @customer = Customer.new(params[:customer])
    if @customer.save
      render :action => "index"
    else
      render :action => "step_two"
    end
  end

end

#Modelo de dados

class Customer < ActiveRecord::Base
require 'universal_ruby_whois'
require 'brazilian-rails'

  validates_presence_of :cnpj, :name, :state, :province, :city
  usar_como_cnpj :cnpj

  def self.check_domain(domain)
    @t = Whois.find(domain)
    if @t.nil? || @t.blank?
       @message = "Dominio invalido"
    elsif @t.available? == false
      @message = "Dominio ja registrado"
    else
      @message = "Dominio liberado" if @t.available? == true
    end
    @message
  end

end

#Minha view já integrada ao layout padrão

<% form_tag('javascript:void(0)') do %>
<label for="domain">Dom&iacute;nio: </label><%= text_field_tag 'domain' %>
<% end %>

<%= observe_field   :domain,
                    :frequency => 3,
                    :loading => "Element.show('spinner')",
                    :complete => "Element.hide('spinner')",
                    :url => { :action => 'save_step_one', :only_path => false},
                    :with =>  "'domain=' + encodeURIComponent(value)"
%>
<%= image_tag 'ajax-loader.gif', :id => 'spinner', :style => "display:none" %>
<div id="results"></div>



#save_step_one.rjs -> ajax

page.replace_html 'results', :partial => "domain" unless @msg == "Dominio invalido"
page.replace_html 'results', "Informe um dom&iacute;nio v&aacute;lido" if params[:domain].blank? || @msg == "Dominio invalido"