VietTH: Implement breadcrumb, add to cart, checkout

Conflicts:
	app/views/layouts/_breadcrumb.html.haml

app/assets/stylesheets/application.css

@@ -13,4 +13,6 @@
  *= require_self
  *= require bootstrap_and_overrides
  *= require layout
+ *= require product
+ *= require cart
  */

app/assets/stylesheets/cart.css.scss

+#cart-info{
+  margin-bottom: 30px;
+}
\ No newline at end of file

app/assets/stylesheets/product.css.scss

+#product-detail{
+  .product-image img{
+    width: 110px;
+    height: 86px;
+    float: left;
+    margin: 0 20px 20px 0;
+  }
+
+  .product-title{
+    font-size: 16px;
+  }
+}
\ No newline at end of file

app/controllers/application_controller.rb

@@ -5,17 +5,18 @@ class ApplicationController < ActionController::Base
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
 
-  before_action :get_sidebar_categories
-
   protected
   def params_permitted data = nil
     data ||= self.class::PERMIT
     params.require(data.keys.first).permit(data.values.first)
   end
 
-  def get_sidebar_categories
-    unless devise_controller?
-      @sidebar_categories = Category.limit(Settings.limit_category).select(Category::JSON_DEFAULT)
-    end
+  def add_breadcrumb(title, url = nil)
+    @breadcrumbs = [] if @breadcrumbs.blank?
+    @breadcrumbs.push({title: title, url: url})
+  end
+
+  def add_breadcrumb_home
+    add_breadcrumb('Home', root_path)
   end
 end
\ No newline at end of file

app/controllers/carts_controller.rb

+class CartsController < ApplicationController
+  include CartsManagement
+
+  def index
+    @cart = Cart.new
+  end
+
+  def create
+    cart = current_user.carts.build(cart_params)
+
+    product_ids = []
+    quantites = {}
+    cart_params['cart_items_attributes'].each do |item|
+      id = item.last['product_id']
+      product_ids << id
+      quantites[id] = item.last['quantity']
+    end
+
+    products = Product.where(id: [product_ids]).select(:id, :price)
+    total = products.inject(0) do |sum, product|
+      sum + (product.price.to_i * quantites[product.id.to_s].to_i)
+    end
+    cart.total = total
+
+    if cart.save
+      clear_cart
+      redirect_to root_path
+    else
+      render :index
+    end
+  end
+
+  private
+  def cart_params
+    params.require(:cart).permit(:total, cart_items_attributes: [:product_id, :quantity])
+  end
+
+end
\ No newline at end of file

app/controllers/concerns/carts_management.rb

+module CartsManagement extend ActiveSupport::Concern
+  included do
+    def add_to_cart product
+      cart_item = {
+        'id' => product.id,
+        'title' => product.title,
+        'price' => product.price,
+        'quantity' => 1
+      }
+      unless session['cart_info']['items'].include?(cart_item)
+        session['cart_info']['items'].push(cart_item)
+        session['cart_info']['total'] += 1
+      end
+    end
+
+    def clear_cart
+      session['cart_info'] = nil
+    end
+
+    def session_cart
+      session['cart_info'].with_indifferent_access
+    end
+  end
+end
\ No newline at end of file

app/controllers/home_controller.rb

 class HomeController < ApplicationController
+  before_action :add_breadcrumb_home
+
   def index
     @recommended_items = Product.recommended
     @newest_items = Product.newest

app/controllers/products_controller.rb

 class ProductsController < ApplicationController
-  before_action :set_product, only: :new
-  before_action :set_categories, only: [:new, :create]
+  include CartsManagement
+
+  before_action :set_product, only: [:show, :add_cart]
+  before_action :set_categories, only: [:new]
+  before_action :add_breadcrumb_home
 
   PERMIT = { product: %i(title price category_id image) }
 
   def new
+    @product = Product.new
+    add_breadcrumb('New product')
   end
 
   def create
-    @product = Product.create(params_permitted)
-    if @product.valid?
+    @product = Product.new(params_permitted)
+    if @product.save
       redirect_to root_path
     else
       render :new
     end
   end
 
+  def show
+    add_breadcrumb(@product.category.decorate.title, category_path(@product.category))
+    add_breadcrumb(@product.title)
+  end
+
+  def add_cart
+    # clear_cart
+    add_to_cart @product
+    redirect_to @product
+  end
+
   private
   def set_product
-    @product = Product.find_by(id: params[:id]) || Product.new
+    @product = Product.find_by(id: params[:id])
   end
 
   def set_categories
     @categories = Category.all.limit(Settings.limit_category)
   end
+
 end
\ No newline at end of file

app/decorators/product_decorator.rb

@@ -4,4 +4,16 @@ class ProductDecorator < Draper::Decorator
   def price
     return object.price || 'Contact'
   end
+
+  def image_sm_url
+    object.amazon? ? object.image_sm_url : object.image.small.url
+  end
+
+  def image_md_url
+    object.amazon? ? object.image_md_url : object.image.medium.url
+  end
+
+  def image_lg_url
+    object.amazon? ? object.image_lg_url : object.image.large.url
+  end
 end
\ No newline at end of file

app/helpers/application_helper.rb

 module ApplicationHelper
+  def session_cart
+    (session[:cart_info] ||= {items: [], total: 0}).with_indifferent_access
+  end
 end

app/models/cart.rb

+class Cart < ActiveRecord::Base
+  belongs_to :user
+  has_many :cart_items, dependent: :destroy
+
+  accepts_nested_attributes_for :cart_items
+end

app/models/cart_item.rb

+class CartItem < ActiveRecord::Base
+  belongs_to :cart
+  belongs_to :product
+end

app/models/user.rb

 class User < ActiveRecord::Base
+  has_many :carts
+
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable and :omniauthable
   devise :database_authenticatable, :registerable,

app/views/carts/index.html.haml

+#checkout-cart
+  = form_for @cart do |f|
+    %table.table
+      %thead
+        %tr
+          %td.text-right #
+          %td Title
+          %td Price
+          %td Quantity
+      %tbody
+        - session_cart[:items].each_with_index do |cart_item, index|
+          %tr
+            %td.number.text-right
+              = index + 1
+            %td.title
+              = link_to cart_item[:title], product_path(cart_item[:id])
+              = hidden_field_tag "cart[cart_items_attributes][#{index}][product_id]", cart_item[:id]
+            %td.price
+              = cart_item[:price]
+            %td.quantity
+              = text_field_tag "cart[cart_items_attributes][#{index}][quantity]", cart_item[:quantity]
+      %tfoot
+        %tr
+          %td.text-right{colspan: 4}
+            = f.submit 'Checkout', class: 'btn btn-primary'
+

app/views/categories/_recommended.html.haml

@@ -3,5 +3,5 @@
     .product-title
       = link_to product.title, product
     .product-image.img-thumbnail
-      = image_tag(product.image_md_url)
+      = image_tag product.decorate.image_md_url
 

app/views/layouts/_breadcrumb.html.haml

-%ul.breadcrumb
-  %li
-    %a{href: '#'}
-      Home
-  %li
-    %a{href: '#'}
-      Cate 1
\ No newline at end of file
+- if @breadcrumbs.present?
+  %ul.breadcrumb
+    - @breadcrumbs.each do |breadcrumb|
+      %li= link_to_if breadcrumb[:url].present?, breadcrumb[:title], breadcrumb[:url]
\ No newline at end of file

app/views/layouts/_cart.html.haml

+#cart-info
+  %h3.title Category
+  = "Total: #{pluralize(session_cart[:total], 'item')}"
+  = link_to 'Checkout', carts_path, class: 'btn btn-default pull-right'
\ No newline at end of file

app/views/layouts/_sidebar.html.haml

 %h3.title Category
 %ul.nav.nav-sidebar
-  = render @sidebar_categories
\ No newline at end of file
+  = render Category.limit(Settings.limit_category).select(Category::JSON_DEFAULT)
\ No newline at end of file

app/views/layouts/application.html.haml

@@ -21,7 +21,13 @@
 
       #content.row
         .col-md-2.sidebar
-          = render 'layouts/sidebar'
+          .row
+            .col-md-12
+              = render 'layouts/sidebar'
+          .row
+            .col-md-12
+              = render 'layouts/cart'
+
         .col-md-10
           = yield
 

app/views/products/_product.html.haml

 .row.product-item
   .col-md-1
     .product-image.img-thumbnail
-      %img{src: product.image_sm_url}
+      %img{src: product.decorate.image_sm_url}
   .col-md-9
     .product-title
       = link_to product.title, product_path(product)

app/views/products/show.html.haml

+#product-detail
+  .product-title
+    %h4= @product.title
+  .product-image
+    = image_tag @product.decorate.image_lg_url, class: 'img-thumbnail'
+  .product-id
+    Item ID:
+    = @product.id
+  .product-price
+    Price:
+    = @product.decorate.price
+  .product-date
+    Date:
+    = l(@product.created_at)
+
+  .clearfix
+
+  .product-addto-cart
+    = link_to 'Buy', add_cart_product_path(@product), class: 'btn btn-primary'
\ No newline at end of file

config/locales/en.yml

@@ -21,3 +21,6 @@
 
 en:
   hello: "Hello world"
+  time:
+    formats:
+      default: "%d/%m/%Y"

config/routes.rb

@@ -2,6 +2,13 @@ Rails.application.routes.draw do
   devise_for :users
   root 'home#index'
 
-  resources :products
+  resources :products do
+    member do
+      get :add_cart
+    end
+  end
+
   resources :categories
+
+  resources :carts
 end
\ No newline at end of file

db/migrate/20150706065803_create_carts.rb

+class CreateCarts < ActiveRecord::Migration
+  def change
+    create_table :carts do |t|
+      t.timestamps null: false
+      t.references :user, index: true, null: false
+      t.decimal :total, default: 0
+    end
+  end
+end

db/migrate/20150706070040_create_cart_items.rb

+class CreateCartItems < ActiveRecord::Migration
+  def change
+    create_table :cart_items do |t|
+      t.timestamps null: false
+      t.references :cart, index: true
+      t.references :product, index: true
+      t.integer :quantity, default: 1
+      t.decimal :price, default: 0
+    end
+  end
+end

db/migrate/20150706090027_change_default_value_to_product_price.rb

+class ChangeDefaultValueToProductPrice < ActiveRecord::Migration
+  def up
+    change_column :products, :price, :decimal, default: 0
+  end
+
+  def down
+    change_column :products, :price, :decimal
+  end
+end

db/schema.rb

@@ -11,7 +11,28 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150703074751) do
+ActiveRecord::Schema.define(version: 20150706090027) do
+
+  create_table "cart_items", force: :cascade do |t|
+    t.datetime "created_at",                                      null: false
+    t.datetime "updated_at",                                      null: false
+    t.integer  "cart_id",    limit: 4
+    t.integer  "product_id", limit: 4
+    t.integer  "quantity",   limit: 4,                default: 1
+    t.decimal  "price",                precision: 10, default: 0
+  end
+
+  add_index "cart_items", ["cart_id"], name: "index_cart_items_on_cart_id", using: :btree
+  add_index "cart_items", ["product_id"], name: "index_cart_items_on_product_id", using: :btree
+
+  create_table "carts", force: :cascade do |t|
+    t.datetime "created_at",                                      null: false
+    t.datetime "updated_at",                                      null: false
+    t.integer  "user_id",    limit: 4,                            null: false
+    t.decimal  "total",                precision: 10, default: 0
+  end
+
+  add_index "carts", ["user_id"], name: "index_carts_on_user_id", using: :btree
 
   create_table "categories", force: :cascade do |t|
     t.datetime "created_at",                            null: false
@@ -29,7 +50,7 @@ ActiveRecord::Schema.define(version: 20150703074751) do
     t.string   "image_lg_url", limit: 255
     t.string   "image_md_url", limit: 255
     t.string   "image_sm_url", limit: 255
-    t.decimal  "price",                    precision: 10
+    t.decimal  "price",                    precision: 10, default: 0
     t.integer  "category_id",  limit: 4,                              null: false
     t.integer  "product_type", limit: 4,                  default: 0
     t.string   "image",        limit: 255