Story4

.gitignore

@@ -20,3 +20,4 @@
 # Ignore Byebug command history file.
 .byebug_history
 config/database.yml
+public/uploads

Gemfile

@@ -30,9 +30,12 @@ gem 'jbuilder', '~> 2.5'
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
 
+gem 'bootstrap-sass'
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platform: :mri
+  gem 'pry'
+  gem 'awesome_rails_console'
 end
 
 group :development do
@@ -46,3 +49,8 @@ end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
+gem 'devise'
+gem 'simple_form'
+gem 'font-awesome-rails'
+gem 'carrierwave'
+gem 'mini_magick'

Gemfile.lock

@@ -39,8 +39,24 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     arel (7.1.1)
+    autoprefixer-rails (6.7.7.2)
+      execjs
+    awesome_print (1.8.0)
+    awesome_rails_console (0.4.0)
+      awesome_print
+      pry-rails
+      railties
+    bcrypt (3.1.11)
+    bootstrap-sass (3.3.7)
+      autoprefixer-rails (>= 5.2.1)
+      sass (>= 3.3.4)
     builder (3.2.2)
     byebug (9.0.5)
+    carrierwave (1.2.1)
+      activemodel (>= 4.0.0)
+      activesupport (>= 4.0.0)
+      mime-types (>= 1.16)
+    coderay (1.1.2)
     coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.2.x)
@@ -50,9 +66,17 @@ GEM
     coffee-script-source (1.10.0)
     concurrent-ruby (1.0.2)
     debug_inspector (0.0.2)
+    devise (4.2.1)
+      bcrypt (~> 3.0)
+      orm_adapter (~> 0.1)
+      railties (>= 4.1.0, < 5.1)
+      responders
+      warden (~> 1.2.3)
     erubis (2.7.0)
     execjs (2.7.0)
     ffi (1.9.14)
+    font-awesome-rails (4.7.0.2)
+      railties (>= 3.2, < 5.2)
     globalid (0.3.7)
       activesupport (>= 4.1.0)
     i18n (0.7.0)
@@ -74,14 +98,21 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
+    mini_magick (4.8.0)
     mini_portile2 (2.1.0)
     minitest (5.9.0)
     multi_json (1.12.1)
     nio4r (1.2.1)
     nokogiri (1.6.8)
       mini_portile2 (~> 2.1.0)
       pkg-config (~> 1.1.7)
+    orm_adapter (0.5.0)
     pkg-config (1.1.7)
+    pry (0.11.0)
+      coderay (~> 1.1.0)
+      method_source (~> 0.8.1)
+    pry-rails (0.3.6)
+      pry (>= 0.10.4)
     puma (3.6.0)
     rack (2.0.1)
     rack-test (0.6.3)
@@ -113,13 +144,18 @@ GEM
     rb-fsevent (0.9.7)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
+    responders (2.3.0)
+      railties (>= 4.2.0, < 5.1)
     sass (3.4.22)
     sass-rails (5.0.6)
       railties (>= 4.0.0, < 6)
       sass (~> 3.1)
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    simple_form (3.4.0)
+      actionpack (> 4, < 5.1)
+      activemodel (> 4, < 5.1)
     spring (1.7.2)
     spring-watcher-listen (2.0.0)
       listen (>= 2.7, < 4.0)
@@ -142,6 +178,8 @@ GEM
       thread_safe (~> 0.1)
     uglifier (3.0.1)
       execjs (>= 0.3.0, < 3)
+    warden (1.2.7)
+      rack (>= 1.0)
     web-console (3.3.1)
       actionview (>= 5.0)
       activemodel (>= 5.0)
@@ -155,14 +193,22 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  awesome_rails_console
+  bootstrap-sass
   byebug
+  carrierwave
   coffee-rails (~> 4.2)
+  devise
+  font-awesome-rails
   jbuilder (~> 2.5)
   jquery-rails
   listen (~> 3.0.5)
+  mini_magick
+  pry
   puma (~> 3.0)
   rails (~> 5.0.0)
   sass-rails (~> 5.0)
+  simple_form
   spring
   spring-watcher-listen (~> 2.0.0)
   sqlite3
@@ -172,4 +218,4 @@ DEPENDENCIES
   web-console
 
 BUNDLED WITH
-   1.12.5
+   1.14.5

app/assets/javascripts/admin/products.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/javascripts/application.js

@@ -13,4 +13,6 @@
 //= require jquery
 //= require jquery_ujs
 //= require turbolinks
+//= require bootstrap/alert
+//= require bootstrap/dropdown
 //= require_tree .

app/assets/javascripts/cart_items.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/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/javascripts/products.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/javascripts/welcome.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/admin/products.scss

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

app/assets/stylesheets/application.css → app/assets/stylesheets/application.scss

@@ -13,3 +13,7 @@
  *= require_tree .
  *= require_self
  */
+
+@import "bootstrap-sprockets";
+@import "bootstrap";
+@import "font-awesome";

app/assets/stylesheets/cart_items.scss

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

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/assets/stylesheets/products.scss

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

app/assets/stylesheets/welcome.scss

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

app/controllers/admin/products_controller.rb

@@ -0,0 +1,43 @@
+class Admin::ProductsController < ApplicationController
+  before_action :authenticate_user!
+  before_action :admin_required
+  layout "admin"
+
+  def index
+    @products = Product.all
+  end
+
+  def new
+    @product = Product.new
+  end
+
+  def edit
+    @product = Product.new
+  end
+
+  def update
+    @product = Product.find(params[:id])
+    if @product.update(product_params)
+      redirect_to admin_products_path
+    else
+      render :edit
+    end
+  end
+
+  def create
+    @product = Product.new(product_params)
+
+    if @product.save
+      redirect_to admin_products_path
+    else
+      render :new
+    end
+  end
+
+  private
+
+  def product_params
+    params.require(:product).permit(:title, :description, :quantity, :price, :image)
+  end
+
+end

app/controllers/application_controller.rb

@@ -1,3 +1,26 @@
 class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception
+
+  def admin_required
+    if !current_user.admin?
+      redirect_to "/", alert:" You are not admin "
+    end
+  end
+
+  helper_method :current_cart
+
+  def current_cart
+    @current_cart ||= find_cart
+  end
+
+  private
+
+  def find_cart
+    cart = Cart.find_by(id: session[:cart_id])
+    if cart.blank?
+      cart = Cart.create
+    end
+    session[ :cart_id] = cart.id
+    return cart
+  end
 end

app/controllers/cart_items_controller.rb

@@ -0,0 +1,29 @@
+class CartItemsController < ApplicationController
+  before_action :authenticate_user!
+
+  def destroy
+    @cart = current_cart
+    @cart_item = @cart.cart_items.find_by(product_id: params[:id])
+    @product = @cart_item.product
+    @cart_item.destroy
+
+    flash[:warning] = "成功将 #{@product.title} 从购物车删除"
+    redirect_to :back
+  end
+
+  def update
+    @cart = current_cart
+    @cart_item = @cart.cart_items.find_by(product_id: params[:id])
+    if @cart_item.product.quantity >= cart_item_params[:quantity].to_i
+      @cart_item.update(cart_item_params)
+      flash[:notice] = "成功变更数量"
+    else
+      flash[:warning] = "数量不足以加入购物车"
+    end
+    redirect_to carts_path
+  end
+
+  def cart_item_params
+    params.require(:cart_item).permit(:quantity)
+  end
+end

app/controllers/carts_controller.rb

@@ -0,0 +1,7 @@
+class CartsController < ApplicationController
+  def clean
+    current_cart.clean!
+    flash[:warning] = "已清空购物车"
+    redirect_to carts_path
+  end
+end

app/controllers/products_controller.rb

@@ -0,0 +1,20 @@
+class ProductsController < ApplicationController
+  def index
+    @products = Product.all
+  end
+
+  def show
+    @product = Product.find(params[:id])
+  end
+
+  def add_to_cart
+    @product = Product.find(params[:id])
+    if !current_cart.products.include? (@product)
+    current_cart.add_product_to_cart(@product)
+    flash[:notice] = "成功将#{@product.title} 加入购物车"
+    else
+      flash[:warning] = "你的购物车内已有此物品"
+    end
+    redirect_to :back
+  end
+end

app/controllers/welcome_controller.rb

@@ -0,0 +1,5 @@
+class WelcomeController < ApplicationController
+  def index
+    flash[:notice] = "Goodbye Loser"
+  end
+end

app/helpers/admin/products_helper.rb

@@ -0,0 +1,2 @@
+module Admin::ProductsHelper
+end

app/helpers/cart_items_helper.rb

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

app/helpers/carts_helper.rb

@@ -0,0 +1,5 @@
+module CartsHelper
+  def render_cart_total_price(cart)
+    cart.total_price
+  end
+end

app/helpers/flashes_helper.rb

@@ -0,0 +1,11 @@
+module FlashesHelper
+  FLASH_CLASSES = { alert: "danger", notice: "success", warning: "warning"}.freeze
+
+  def flash_class(key)
+    FLASH_CLASSES.fetch key.to_sym, key
+  end
+
+  def user_facing_flashes
+    flash.to_hash.slice "alert", "notice","warning"
+  end
+end

app/helpers/products_helper.rb

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

app/helpers/welcome_helper.rb

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

app/models/cart.rb

@@ -0,0 +1,25 @@
+class Cart < ApplicationRecord
+  has_many :cart_items
+  has_many :products, through: :cart_items, source: :product
+
+  def add_product_to_cart(product)
+    ci = cart_items.build
+    ci.product = product
+    ci.quantity = 1
+    ci.save
+  end
+
+  def total_price
+  sum = 0
+    cart_items.each do |cart_item|
+    if cart_item.product.price.present?
+    sum += cart_item.product.price * cart_item.quantity
+    end
+  end
+  sum
+end
+
+  def clean!
+    cart_items.destroy_all
+  end
+end