Shop Cart implementation

 - Order and OrderItem
 - Cart list page 🚀

Author: ivanyshak

Gemfile

@@ -23,6 +23,7 @@ gem 'redis', '~>3.2'
 gem 'sidekiq'
 gem 'sidekiq-scheduler', '~> 2.1.4'
 gem 'simple_form'
+gem 'font-awesome-rails'
 
 gem 'courses', path: 'components/courses'
 gem 'shop', path: 'components/shop'

Gemfile.lock

@@ -226,6 +226,8 @@ GEM
     faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
     ffi (1.12.2)
+    font-awesome-rails (4.7.0.7)
+      railties (>= 3.2, < 7)
     formatador (0.2.5)
     friendly_id (5.3.0)
       activerecord (>= 4.0.0)
@@ -650,6 +652,7 @@ DEPENDENCIES
   ez-settings
   factory_bot_rails
   faker
+  font-awesome-rails
   friendly_id (~> 5.1)
   gibbon (~> 3.0)
   groupdate (~> 4.0)

app/assets/stylesheets/app/application.scss

@@ -14,6 +14,7 @@
 
 @import "https://fonts.googleapis.com/css2?family=Oswald&display=swap'";
 @import "local_fonts";
+@import "font-awesome";
 
 @import "normalize";
 

app/assets/stylesheets/app/base/_base.scss

@@ -134,3 +134,28 @@ q {
 .pk-no-display {
   display: none !important;
 }
+
+.shopping_cart-icon {
+  display: inline-block;
+  position: fixed;
+  left: 1450px;
+  opacity: 80%;
+
+  &:hover {
+    opacity: 100%;
+  }
+}
+
+.cart_table {
+  margin: 40px;
+
+  table {
+    border-collapse: collapse;
+    width: 100%;
+  }
+
+  th, td {
+    text-align: left;
+    padding: 8px;
+  }
+}

app/helpers/admin/events_helper.rb

@@ -42,7 +42,6 @@ def event_status_label(event)
                   class: ['ui label', BG_STATUS_CLASS[event.status.to_sym]]
     end
 
-    # rubocop:disable Metrics/AbcSize
     def event_visitors(event)
       requested = event.pending_visit_requests.length
       approved  = event.approved_visit_requests.length
@@ -56,7 +55,6 @@ def event_visitors(event)
         t('events.index.visitors.visited')   => visited
       }
     end
-    # rubocop:enable Metrics/AbcSize
 
     def event_verified_user_data(event)
       verified = event.verified_visitors.length

app/views/layouts/application.slim

@@ -13,6 +13,7 @@ html
     link rel="icon" type="image/png" href="/favicon-16x16.png" sizes="16x16"
     link rel="manifest" href="/manifest.json"
     link rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5"
+    link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.13.0/css/all.css"
     == render 'layouts/ga/head' if Rails.env.production?
 
   body.pk-main-layout class="#{yield(:main_body_class)}"

components/shop/app/controllers/shop/base_controller.rb

@@ -4,6 +4,10 @@ module Shop
   class BaseController < ApplicationController
     before_action :authenticate_user!
 
+    def current_order
+      session[:order_id] ? Shop::Order.find(session[:order_id]) : []
+    end
+
     private
 
     def render_form

components/shop/app/controllers/shop/items_controller.rb

@@ -3,6 +3,22 @@
 module Shop
   class ItemsController < BaseController
     helper_method :items
+    helper_method :current_order
+
+    # @deprecated
+    # def add_to_cart
+    #   cart = session[:cart] || []
+    #   cart << item.id unless cart.include?(item.id)
+
+    #   session[:cart] = cart
+
+    #   redirect_back(fallback_location: root_path, notice: "#{item.name} was successfully added to cart")
+    # end
+
+    # def remove_from_cart
+    #   session[:cart].delete(item.id)
+    #   redirect_back(fallback_location: root_path, notice: "#{item.name} was successfully removed from cart")
+    # end
 
     private
 

components/shop/app/controllers/shop/order_items_controller.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module Shop
+  class OrderItemsController < BaseController
+    helper_method :item
+    helper_method :order_items
+    helper_method :current_order
+
+    def create
+      order_item = ::Shop::OrderItem.new(item_id: item.id, order_id: order_id, price: item.price)
+      order_item.save
+
+      redirect_to shop_items_path
+    end
+
+    def update
+      order_item.increase_quantity!
+      redirect_to shop_order_items_path
+    end
+
+    def destroy
+      order_item.reduce_quantity!
+      redirect_to shop_order_items_path
+    end
+
+    private
+
+    def order_items
+      order_items = Shop::OrderItem.includes(:item)
+    end
+
+    def order_item
+      @order_items ||= Shop::OrderItem.find(params[:id])
+    end
+
+    def item
+      @items ||= Shop::Item.find(params[:item_id])
+    end
+
+    def order_id
+      session[:order_id] ||= Shop::Order.create.id
+    end
+  end
+end

components/shop/app/helpers/shop/item_helper.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Shop
+  module ItemHelper
+  end
+end