widget_test.rb

class ShoppingCartWidget < Apotomo::Widget
  include Devise::Controllers::Helpers 
  helper ApplicationHelper

  after_add do |me, parent|
    me.root.respond_to_event :item_removed, :with => :redraw, :on => me.name
  end

  has_widgets do |me|
    @user = User.find(param(:user))
    @user.shopping_cart.cart_items.each do |cart_item|
      me << widget(:cart_item_widget, "item-#{ cart_item.product_no}", :display, :cart_item => cart_item)
    end
  end

  def display
    if user_signed_in?
      @shopping_cart = @user.shopping_cart
      render
    else 
      return render :view => :blank unless user_signed_in?
    end
  end

  def checkout
    render
  end

  def redraw
    replace :state => :display
  end

end


class CartItemWidget < Apotomo::Widget
  include Devise::Controllers::Helpers 
  helper ApplicationHelper
  responds_to_event :remove, :with => :remove_item

  def display
    @cart_item = @opts[:cart_item]

    return render :view => :blank unless @cart_item
    render
  end

  def remove_item
    @cart_item = current_user.shopping_cart.cart_items.find(param(:id))
    @cart_item.destroy

    trigger :item_removed
  end

end