samseen/application.html.erb

## application.html.erb
<!DOCTYPE html>
<html>
<head>
  <title>Pragprog Books Online Store</title>
  <%= stylesheet_link_tag "application", :media => "all" %>
  <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
  <%= csrf_meta_tags %>
</head>
<body class='<%= controller.controller_name %>'>

	<div id="banner">
		<%= image_tag("logo.png") %>
		<%= @page_title || "Pragmatic Bookshelf" %>
	</div>
	<div id="columns">
		<div id="side">
			<div id="cart">
				<% if @cart %>
					<%= hidden_div_if(@cart.line_items.empty?, id: 'cart') do %>
						<%= render @cart %>
					<% end %>
				<% end %>
			</div>

			<ul>
				<li><a href="#">Home</a></li>
				<li><a href="#/faq">Questions</a></li>
				<li><a href="#/news">News</a></li>
				<li><a href="#/contact">Contact</a></li>
			</ul>
		</div>
		<div id="main">
			<%= yield %>
		</div>
	</div>
</body>
</html>

## order.rb
class Order < ActiveRecord::Base
	has_many :line_items, dependent: :destroy
	PAYMENT_TYPES = [ "Check", "Credit card", "Purchase order"]
	validates :name, :address, :email, presence: true
	validates :pay_type, inclusion: PAYMENT_TYPES

	def add_line_items_from_cart(cart)
		cart.line_items.each do |item|
			item.cart_id = nil
			line_items << item
		end
	end
end

## orders_controller.rb
class OrdersController < ApplicationController
  before_action :set_order, only: [:show, :edit, :update, :destroy]

  # GET /orders
  # GET /orders.json
  def index
    #@orders = Order.paginate page: params[:page], order: 'created_at desc', per_page: 10
    @orders = Order.paginate page: params[:page], order: 'created_at desc', per_page: 10

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @orders }
    end
  end

  # GET /orders/1
  # GET /orders/1.json
  def show
  end

  # GET /orders/new
  def new
    @cart = current_cart
    if @cart.line_items.empty?
      redirect_to store_url, notice: "Your cart is empty"
      return
    end

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

  # GET /orders/1/edit
  def edit
  end

  # POST /orders
  # POST /orders.json
  def create
    @order = Order.new(order_params[:order])
    @order.add_line_items_from_cart(current_cart)

    respond_to do |format|
      if @order.save
        Cart.destroy(session[:cart_id])
        session[:cart_id] = nil
        format.html { redirect_to store_url, notice: 'Thank you for your order.' }
        format.html { redirect_to @order, notice: 'Order was successfully created.' }
        format.json { render json: @order, status: :created, location: @order }
      else
        @cart = current_cart
        format.html { render action: "new" }
        format.json { render json: @order.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /orders/1
  # PATCH/PUT /orders/1.json
  def update
    respond_to do |format|
      if @order.update(order_params)
        format.html { redirect_to @order, notice: 'Order was successfully updated.' }
        format.json { render :show, status: :ok, location: @order }
      else
        format.html { render :edit }
        format.json { render json: @order.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /orders/1
  # DELETE /orders/1.json
  def destroy
    @order.destroy
    respond_to do |format|
      format.html { redirect_to orders_url, notice: 'Order was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_order
      @order = Order.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def order_params
      params.require(:order).permit(:name, :address, :email, :pay_type)
    end
end
	<!DOCTYPE html>
	<html>
	<head>
	<title>Pragprog Books Online Store</title>
	<%= stylesheet_link_tag "application", :media => "all" %>
	<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
	<%= csrf_meta_tags %>
	</head>
	<body class='<%= controller.controller_name %>'>

	<div id="banner">
	<%= image_tag("logo.png") %>
	<%= @page_title \|\| "Pragmatic Bookshelf" %>
	</div>
	<div id="columns">
	<div id="side">
	<div id="cart">
	<% if @cart %>
	<%= hidden_div_if(@cart.line_items.empty?, id: 'cart') do %>
	<%= render @cart %>
	<% end %>
	<% end %>
	</div>

	<ul>
	<li><a href="#">Home</a></li>
	<li><a href="#/faq">Questions</a></li>
	<li><a href="#/news">News</a></li>
	<li><a href="#/contact">Contact</a></li>
	</ul>
	</div>
	<div id="main">
	<%= yield %>
	</div>
	</div>
	</body>
	</html>
	class Order < ActiveRecord::Base
	has_many :line_items, dependent: :destroy
	PAYMENT_TYPES = [ "Check", "Credit card", "Purchase order"]
	validates :name, :address, :email, presence: true
	validates :pay_type, inclusion: PAYMENT_TYPES

	def add_line_items_from_cart(cart)
	cart.line_items.each do \|item\|
	item.cart_id = nil
	line_items << item
	end
	end
	end
	class OrdersController < ApplicationController
	before_action :set_order, only: [:show, :edit, :update, :destroy]

	# GET /orders
	# GET /orders.json
	def index
	#@orders = Order.paginate page: params[:page], order: 'created_at desc', per_page: 10
	@orders = Order.paginate page: params[:page], order: 'created_at desc', per_page: 10

	respond_to do \|format\|
	format.html # index.html.erb
	format.json { render json: @orders }
	end
	end

	# GET /orders/1
	# GET /orders/1.json
	def show
	end

	# GET /orders/new
	def new
	@cart = current_cart
	if @cart.line_items.empty?
	redirect_to store_url, notice: "Your cart is empty"
	return
	end

	@order = Order.new
	respond_to do \|format\|
	format.html # new.html.erb
	format.json { render json: @order }
	end
	end

	# GET /orders/1/edit
	def edit
	end

	# POST /orders
	# POST /orders.json
	def create
	@order = Order.new(order_params[:order])
	@order.add_line_items_from_cart(current_cart)

	respond_to do \|format\|
	if @order.save
	Cart.destroy(session[:cart_id])
	session[:cart_id] = nil
	format.html { redirect_to store_url, notice: 'Thank you for your order.' }
	format.html { redirect_to @order, notice: 'Order was successfully created.' }
	format.json { render json: @order, status: :created, location: @order }
	else
	@cart = current_cart
	format.html { render action: "new" }
	format.json { render json: @order.errors, status: :unprocessable_entity }
	end
	end
	end

	# PATCH/PUT /orders/1
	# PATCH/PUT /orders/1.json
	def update
	respond_to do \|format\|
	if @order.update(order_params)
	format.html { redirect_to @order, notice: 'Order was successfully updated.' }
	format.json { render :show, status: :ok, location: @order }
	else
	format.html { render :edit }
	format.json { render json: @order.errors, status: :unprocessable_entity }
	end
	end
	end

	# DELETE /orders/1
	# DELETE /orders/1.json
	def destroy
	@order.destroy
	respond_to do \|format\|
	format.html { redirect_to orders_url, notice: 'Order was successfully destroyed.' }
	format.json { head :no_content }
	end
	end

	private
	# Use callbacks to share common setup or constraints between actions.
	def set_order
	@order = Order.find(params[:id])
	end

	# Never trust parameters from the scary internet, only allow the white list through.
	def order_params
	params.require(:order).permit(:name, :address, :email, :pay_type)
	end
	end