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   def checkout
  26     @cart = find_cart
  27     if @cart.items.empty?
  28       redirect_to_index("Your cart is empty" )
  29     else
  30       @order = Order.new
  31       respond_to do |format|
  32         format.js if request.xhr?
  33         format.html
  34       end
  35     end
  36   end
  37
  38   def save_order
  39     @cart = find_cart
  40     @order = Order.new(params[:order])
  41     @order.add_line_items_from_cart(@cart)
  42     if @order.save
  43       session[:cart] = nil
  44       redirect_to_index("Thank you for your order")
  45     else
  46       render :action => 'checkout'
  47     end
  48   end
  49
  50
  51  private
  52
  53   def find_cart
  54     session[:cart] ||= Cart.new
  55   end
  56
  57   def redirect_to_index(msg = nil)
  58     flash[:notice] = msg if msg
  59     redirect_to :action => 'index'
  60   end
  61
  62 end