new.html.erb

<h1>New product</h1>

<% @images.each do |image| %>
  <%= image_tag image %>
<% end %>

<%= link_to 'Back', products_path %>

pre_post.html.erb

<div id="product-loading">
  <h1>We're loading your amazing find...</h1>
  <%= image_tag "loading.gif" %>
  
</div>

product.rb

require 'mechanize'
require 'open-uri'

class Product < ActiveRecord::Base
  attr_accessible :name, :price, :thumbnail_image, :original_image, :source_url
  
  def self.create_from_url(url)
    agent = Mechanize.new
    agent.user_agent_alias = 'Mac Safari'
    page = agent.get(url)
    image_urls_array = Array.new
    page.images.each { |img| image_urls_array << img.to_s }
    return image_urls_array
  end
  
end

products_controller.rb

class ProductsController < ApplicationController

...

  def pre_post
    url = params[:url]
    images = Product.create_from_url(url)
    redirect_to :controller => 'products', :action => 'new', :images => images
  end


  def new
    @product = Product.new
    @images = params[:images]

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @product }
    end
  end

...

end