Iteration D1.

app/assets/javascripts/carts.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/carts.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the Carts controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/carts_controller.rb

@@ -0,0 +1,74 @@
+class CartsController < ApplicationController
+  before_action :set_cart, only: [:show, :edit, :update, :destroy]
+
+  # GET /carts
+  # GET /carts.json
+  def index
+    @carts = Cart.all
+  end
+
+  # GET /carts/1
+  # GET /carts/1.json
+  def show
+  end
+
+  # GET /carts/new
+  def new
+    @cart = Cart.new
+  end
+
+  # GET /carts/1/edit
+  def edit
+  end
+
+  # POST /carts
+  # POST /carts.json
+  def create
+    @cart = Cart.new(cart_params)
+
+    respond_to do |format|
+      if @cart.save
+        format.html { redirect_to @cart, notice: 'Cart was successfully created.' }
+        format.json { render :show, status: :created, location: @cart }
+      else
+        format.html { render :new }
+        format.json { render json: @cart.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /carts/1
+  # PATCH/PUT /carts/1.json
+  def update
+    respond_to do |format|
+      if @cart.update(cart_params)
+        format.html { redirect_to @cart, notice: 'Cart was successfully updated.' }
+        format.json { render :show, status: :ok, location: @cart }
+      else
+        format.html { render :edit }
+        format.json { render json: @cart.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /carts/1
+  # DELETE /carts/1.json
+  def destroy
+    @cart.destroy
+    respond_to do |format|
+      format.html { redirect_to carts_url, notice: 'Cart was successfully destroyed.' }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_cart
+      @cart = Cart.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def cart_params
+      params.fetch(:cart, {})
+    end
+end

app/controllers/concerns/current_cart.rb

@@ -0,0 +1,9 @@
+module CurrentCard
+
+  private
+    def set_cart
+      @cart = Cart.find(session[:cart_id])
+    rescue ActiveRecord::RecordNotFound
+      @cart = Cart.create
+      session[:cart_id] = @cart.id
+end

app/helpers/carts_helper.rb

@@ -0,0 +1,2 @@
+module CartsHelper
+end

app/models/cart.rb

@@ -0,0 +1,2 @@
+class Cart < ApplicationRecord
+end

app/views/carts/_cart.json.jbuilder

@@ -0,0 +1,2 @@
+json.extract! cart, :id, :created_at, :updated_at
+json.url cart_url(cart, format: :json)

app/views/carts/_form.html.erb

@@ -0,0 +1,17 @@
+<%= form_for(cart) do |f| %>
+  <% if cart.errors.any? %>
+    <div id="error_explanation">
+      <h2><%= pluralize(cart.errors.count, "error") %> prohibited this cart from being saved:</h2>
+
+      <ul>
+      <% cart.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="actions">
+    <%= f.submit %>
+  </div>
+<% end %>

app/views/carts/edit.html.erb

@@ -0,0 +1,6 @@
+<h1>Editing Cart</h1>
+
+<%= render 'form', cart: @cart %>
+
+<%= link_to 'Show', @cart %> |
+<%= link_to 'Back', carts_path %>

app/views/carts/index.html.erb

@@ -0,0 +1,25 @@
+<p id="notice"><%= notice %></p>
+
+<h1>Carts</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th colspan="3"></th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @carts.each do |cart| %>
+      <tr>
+        <td><%= link_to 'Show', cart %></td>
+        <td><%= link_to 'Edit', edit_cart_path(cart) %></td>
+        <td><%= link_to 'Destroy', cart, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New Cart', new_cart_path %>

app/views/carts/index.json.jbuilder

@@ -0,0 +1 @@
+json.array! @carts, partial: 'carts/cart', as: :cart

app/views/carts/new.html.erb

@@ -0,0 +1,5 @@
+<h1>New Cart</h1>
+
+<%= render 'form', cart: @cart %>
+
+<%= link_to 'Back', carts_path %>

app/views/carts/show.html.erb

@@ -0,0 +1,4 @@
+<p id="notice"><%= notice %></p>
+
+<%= link_to 'Edit', edit_cart_path(@cart) %> |
+<%= link_to 'Back', carts_path %>

app/views/carts/show.json.jbuilder

@@ -0,0 +1 @@
+json.partial! "carts/cart", cart: @cart

config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  resources :carts
   root 'store#index', as: 'store_index'
 
   resources :products

db/migrate/20161115210150_create_carts.rb

@@ -0,0 +1,8 @@
+class CreateCarts < ActiveRecord::Migration[5.0]
+  def change
+    create_table :carts do |t|
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,12 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20161115133900) do
+ActiveRecord::Schema.define(version: 20161115210150) do
+
+  create_table "carts", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
 
   create_table "products", force: :cascade do |t|
     t.string   "title"

test/controllers/carts_controller_test.rb

@@ -0,0 +1,48 @@
+require 'test_helper'
+
+class CartsControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    @cart = carts(:one)
+  end
+
+  test "should get index" do
+    get carts_url
+    assert_response :success
+  end
+
+  test "should get new" do
+    get new_cart_url
+    assert_response :success
+  end
+
+  test "should create cart" do
+    assert_difference('Cart.count') do
+      post carts_url, params: { cart: {  } }
+    end
+
+    assert_redirected_to cart_url(Cart.last)
+  end
+
+  test "should show cart" do
+    get cart_url(@cart)
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get edit_cart_url(@cart)
+    assert_response :success
+  end
+
+  test "should update cart" do
+    patch cart_url(@cart), params: { cart: {  } }
+    assert_redirected_to cart_url(@cart)
+  end
+
+  test "should destroy cart" do
+    assert_difference('Cart.count', -1) do
+      delete cart_url(@cart)
+    end
+
+    assert_redirected_to carts_url
+  end
+end

test/fixtures/carts.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+# This model initially had no columns defined. If you add columns to the
+# model remove the '{}' from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

test/models/cart_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class CartTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end