Untitled

How can I get my URL's to look like www.example.com/1/product/date/price?
Price :belongs_to Products
Product :has_many Prices

def to_param
    "#{id}/#{product.name}/#{purchase_date}/#{price}".parameterize
end

http://localhost:3000/prices/8-turkey-bacon-2012-01-16-2-58

http://localhost:3000/8/turkey-bacon/2012-01-16/$2.58

resources :prices do
  get ":id/:product_name/:purchase_date/:price" => "prices#show"
  get :autocomplete_product_name, :on => :collection
  post :create_multiple, :on => :collection
end

require 'uri'

class Price < ActiveRecord::Base
  def to_param
    URI.encode("/#{id}/#{product.name}/#{purchase_date}/#{price}")
  end
end

# in routes.rb

get ":id/:product_name/:purchase_date/:price" => "controller#action"