app/controllers/store_controller.rb

   1 class StoreController < ApplicationController
   2   def index
   3     @products = Product.find_products_for_sale
   4     @cart = find_cart
   5   end
   6
   7   def add_to_cart
   8     product = Product.find(params[:id])
   9     @cart = find_cart
  10     @current_item = @cart.add_product(product)
  11       respond_to do |format|
  12         format.js if request.xhr?
  13         format.html {redirect_to_index}
  14       end
  15   rescue ActiveRecord::RecordNotFound
  16     logger.error("Attempt to access invalid product #{params[:id]}" )
  17     redirect_to_index('Invalid product')
  18   end
  19
  20   def empty_cart
  21     session[:cart] = nil
  22     redirect_to_index unless request.xhr?
  23   end
  24
  25  private
  26
  27   def find_cart
  28     session[:cart] ||= Cart.new
  29   end
  30
  31   def redirect_to_index(msg = nil)
  32     flash[:notice] = msg if msg
  33     redirect_to :action => 'index'
  34   end
  35
  36 end