VietTH: Implement send email after checkout

Gemfile

@@ -42,6 +42,7 @@ group :development, :test do
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'
   gem 'pry-rails', '~> 0.3.4'
+  gem 'letter_opener', '~> 1.4.1'
 end
 
 # template
@@ -62,4 +63,7 @@ gem 'draper', '~> 2.1.0'
 gem 'devise', '~> 3.5.1'
 
 gem 'carrierwave', '~> 0.10.0'
-gem 'mini_magick', '~> 3.8.1'
\ No newline at end of file
+gem 'mini_magick', '~> 3.8.1'
+
+# Background job
+gem 'sidekiq', '~> 3.4.1'
\ No newline at end of file

Gemfile.lock

@@ -36,6 +36,7 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
+    addressable (2.3.8)
     arel (6.0.0)
     bcrypt (3.1.10)
     binding_of_caller (0.7.2)
@@ -48,6 +49,8 @@ GEM
       activesupport (>= 3.2.0)
       json (>= 1.7)
       mime-types (>= 1.16)
+    celluloid (0.16.0)
+      timers (~> 4.0.0)
     coderay (1.1.0)
     coffee-rails (4.1.0)
       coffee-script (>= 2.2.0)
@@ -57,6 +60,7 @@ GEM
       execjs
     coffee-script-source (1.9.1.1)
     columnize (0.9.0)
+    connection_pool (2.2.0)
     debug_inspector (0.0.2)
     devise (3.5.1)
       bcrypt (~> 3.0)
@@ -87,13 +91,14 @@ GEM
       haml (>= 4.0.6, < 5.0)
       html2haml (>= 1.0.1)
       railties (>= 4.0.1)
+    hitimes (1.2.2)
     html2haml (2.0.0)
       erubis (~> 2.7.0)
       haml (~> 4.0.0)
       nokogiri (~> 1.6.0)
       ruby_parser (~> 3.5)
     i18n (0.7.0)
-    jbuilder (2.3.0)
+    jbuilder (2.3.1)
       activesupport (>= 3.0.0, < 5)
       multi_json (~> 1.2)
     jeff (1.3.0)
@@ -104,6 +109,10 @@ GEM
       thor (>= 0.14, < 2.0)
     json (1.8.3)
     kgio (2.9.3)
+    launchy (2.4.3)
+      addressable (~> 2.3)
+    letter_opener (1.4.1)
+      launchy (~> 2.2)
     loofah (2.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
@@ -114,7 +123,7 @@ GEM
       subexec (~> 0.2.1)
     mini_portile (0.6.2)
     minitest (5.7.0)
-    multi_json (1.11.1)
+    multi_json (1.11.2)
     multi_xml (0.5.5)
     mysql2 (0.3.18)
     nokogiri (1.6.6.2)
@@ -159,6 +168,9 @@ GEM
     rake (10.4.2)
     rdoc (4.2.0)
       json (~> 1.4)
+    redis (3.2.1)
+    redis-namespace (1.5.2)
+      redis (~> 3.0, >= 3.0.4)
     request_store (1.1.0)
     responders (2.1.0)
       railties (>= 4.2.0, < 5)
@@ -176,6 +188,12 @@ GEM
       rdoc (~> 4.0)
     settingslogic (2.0.9)
     sexp_processor (4.6.0)
+    sidekiq (3.4.1)
+      celluloid (~> 0.16.0)
+      connection_pool (>= 2.1.1)
+      json
+      redis (>= 3.0.6)
+      redis-namespace (>= 1.3.1)
     slop (3.6.0)
     spring (1.3.6)
     sprockets (3.2.0)
@@ -188,6 +206,8 @@ GEM
     thor (0.19.1)
     thread_safe (0.3.5)
     tilt (1.4.1)
+    timers (4.0.1)
+      hitimes
     turbolinks (2.5.3)
       coffee-rails
     twitter-bootstrap-rails (3.2.0)
@@ -229,6 +249,7 @@ DEPENDENCIES
   haml-rails (~> 0.9)
   jbuilder (~> 2.0)
   jquery-rails
+  letter_opener (~> 1.4.1)
   mini_magick (~> 3.8.1)
   mysql2
   pry-rails (~> 0.3.4)
@@ -237,6 +258,7 @@ DEPENDENCIES
   sass-rails (~> 5.0)
   sdoc (~> 0.4.0)
   settingslogic (~> 2.0.9)
+  sidekiq (~> 3.4.1)
   spring
   turbolinks
   twitter-bootstrap-rails (~> 3.2.0)

app/controllers/application_controller.rb

@@ -6,11 +6,6 @@ class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception
 
   protected
-  def params_permitted data = nil
-    data ||= self.class::PERMIT
-    params.require(data.keys.first).permit(data.values.first)
-  end
-
   def add_breadcrumb(title, url = nil)
     @breadcrumbs = [] if @breadcrumbs.blank?
     @breadcrumbs.push({title: title, url: url})

app/controllers/carts_controller.rb

@@ -24,12 +24,17 @@ class CartsController < ApplicationController
 
     if cart.save
       clear_cart
+      self.send_checkout_email(cart)
       redirect_to root_path
     else
       render :index
     end
   end
 
+  def send_checkout_email(cart)
+    CartMailer.checkout(current_user.email, cart).deliver_later
+  end
+
   private
   def cart_params
     params.require(:cart).permit(:total, cart_items_attributes: [:product_id, :quantity])

app/controllers/products_controller.rb

@@ -5,15 +5,13 @@ class ProductsController < ApplicationController
   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.new(params_permitted)
+    @product = Product.new(product_params)
     if @product.save
       redirect_to root_path
     else
@@ -41,4 +39,8 @@ class ProductsController < ApplicationController
     @categories = Category.all.limit(Settings.limit_category)
   end
 
+  def product_params
+    params.require(:product).permit(:title, :price, :category_id, :image)
+  end
+
 end
\ No newline at end of file

app/mailers/cart_mailer.rb

+class CartMailer < ActionMailer::Base
+  default from: 'demo@example.com'
+
+  def checkout(email, cart)
+    @cart = cart
+    @cart_items = @cart.cart_items.includes(:product)
+    mail(
+      to: email,
+      subject: "Order number #{cart.id}"
+    )
+  end
+end
\ No newline at end of file

app/views/cart_mailer/checkout.html.haml

+%p= "Order ##{@cart.id}"
+%p= "Total: #{@cart.total}"
+
+%table
+  %thead
+    %tr
+      %td.text-right #
+      %td Title
+      %td Price
+      %td Quantity
+  %tbody
+    - @cart_items.each_with_index do |cart_item, index|
+      %tr
+        %td.number.text-right
+          = index + 1
+        %td.title
+          = link_to cart_item.product.title, product_path(cart_item.product)
+        %td.price
+          = cart_item.product.price
+        %td.quantity
+          = cart_item.product.quantity
\ No newline at end of file

config/application.rb

@@ -22,5 +22,7 @@ module VenShop
 
     # Do not swallow errors in after_commit/after_rollback callbacks.
     config.active_record.raise_in_transactional_callbacks = true
+
+    config.active_job.queue_adapter = :sidekiq
   end
 end

config/environments/development.rb

@@ -40,4 +40,6 @@ Rails.application.configure do
   # config.action_view.raise_on_missing_translations = true
 
   config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
+
+  config.action_mailer.delivery_method = :letter_opener
 end