Tirando Proveito das Rails Engines

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1. Tirando proveito das Rails Engines
2. @nandosousafr
4. Ship It! resultadosdigitais.com.br shiptit.resultadosdigitais.com.br
5. Microserviços tem se tornado um tema bastante popular
6. "Conjunto de serviços que podem ser deployados de forma independente"
7. Rails App Example Loja Aplicações Monolíticas Processamento de Pagamento Nota Fiscal Processamento de Envio
8. Loja Nota fiscal Processamento de Pagamento Processamento de Envio Rails App Example Microserviços
9. Microservices Premature Adoption vs
11. The problem of Rails with large codebases
12. Rails Engines
13. 3.0 3.1 Introdução Mountable Initializers Asset pipeline Versions
14. Engines can be considered miniature applications that provide functionality to their host applications
16. Spree commerce
17. Rails App Example Processamento de Pagamento Processamento de Envio Loja Nota Fiscal
18. Processamento de Pagamento Checkout Gateway App Eventos Gateway Area do Clientes Flow
19. $ rails plugin new payment —mountable
20. create create README.rdoc create Rakefile create payment.gemspec create MIT-LICENSE create .gitignore create Gemfile create app create app/controllers/payment/application_controller.rb create app/helpers/payment/application_helper.rb create app/mailers create app/models create app/views/layouts/payment/application.html.erb create app/assets/images/payment create app/assets/images/payment/.keep create config/routes.rb create lib/payment.rb create lib/tasks/payment_tasks.rake create lib/payment/version.rb create lib/payment/engine.rb create app/assets/stylesheets/payment/application.css create app/assets/javascripts/payment/application.js create bin create bin/rails create test/test_helper.rb create test/payment_test.rb append Rakefile create test/integration/navigation_test.rb vendor_app test/dummy
21. # lib/payment/engine.rb module Payment class Engine < ::Rails::Engine isolate_namespace Payment end end
22. gemspec $:.push File.expand_path("../lib", __FILE__) # Maintain your gem's version: require "payment/version" # Describe your gem and declare its dependencies: Gem::Specification.new do |s| s.name = "payment" s.version = Payment::VERSION s.authors = ["Nando Sousa"] s.email = ["nandosousafr@gmail.com"] s.homepage = "TODO" s.summary = "TODO: Summary of Payment." s.description = "TODO: Description of Payment." s.license = "MIT" s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.rdoc"] s.test_files = Dir["test/**/*"] s.add_dependency "rails", "~> 4.2.2" s.add_development_dependency "sqlite3" end
23. gem 'payment', github: 'org/repo' Main APP Gemfile
24. Rails.application.routes.draw do root 'home#index' mount Payment::Engine => 'payment' end 24 Routes
25. ➜ HostApp bundle exec rake routes Prefix Verb URI Pattern Controller#Action root GET / home#index payment /payment Payment::Engine Routes for Payment::Engine: root GET / payment/instructions#index notification POST /notification(.:format) payment/notification#process
26. billing.notification_url Rails.application.routes.draw do root 'home#index' mount Payment::Engine => ‘payment’, as: :billing end payment.notification_url URL Helper main app
27. main_app.root_url notification_url URL Helper engine
28. invoke active_record create db/migrate/20150725085246_create_payment_invoices.rb create app/models/payment/invoice.rb invoke test_unit create test/models/payment/invoice_test.rb create test/fixtures/payment/invoices.yml $ rails g model Invoice amount Migrations engine
29. $ rake payment:install:migrations Copied migration 20150725110510_create_payment_invoices.payment.rb from payment $ rake railties:install:migrations Migrations engine multiple engines
30. class CreatePaymentInvoices < ActiveRecord::Migration def change create_table :payment_invoices do |t| t.string :amount t.timestamps null: false end end end
31. Payment::Engine.load_seed Seed data
32. app/views/payment/invoices/show.html.erb <%= @invoice.amount %> Main App app/views/payment/invoices/show.html.erb <%= @invoice.amount %> <%= @invoice.status %> Overiding engine
33. Load Assets <%= stylesheet_link_tag “payment/style” %>
35. Obrigado @nandosousafr fernando.sousa@resultadosdigitais.com.br shipit.resultadosdigitais.com.br Thanks! Nando Sousa @nandosousafr nando@resultadosdigitais.com.br shipit.resultadosdigitais.com.br we’re hiring