Rails Engines Janko Marohnić janko-m @jankomarohnic

├── lib │ └── todo.rb └── todo.gemspec

├── lib │ └── todo.rb └── todo.gemspec ├── vendor ├── config ├── app

lib/todo.rb module Todo # ... end module Todo class Engine < Rails::Engine end end

├── app │ └── views │ ├── assets │ ├── controllers │ ├── helpers │ ├── models ├── vendor │ └── assets ├── config │ └── locales ├── lib │ └── tasks │ ├── initializers

Engine App Todo::Engine.routes.draw do resources :tasks end Todo::Engine.routes.draw do resources :tasks end Rails.application.routes.draw do mount Todo::Engine, at: “/todo” end

$ rake routes Prefix Verb URI Pattern Controller#Action root GET / home#index about GET /about pages#about faq GET /terms pages#terms todo /todo Todo::Engine ! Routes for Todo::Engine: tasks GET todo/tasks tasks#index POST todo/tasks tasks#create new_task GET todo/tasks/new tasks#new edit_task GET todo/tasks/:id/edit tasks#edit task GET todo/tasks/:id tasks#show PATCH todo/tasks/:id tasks#update PUT todo/tasks/:id tasks#update DELETE todo/tasks/:id tasks#destroy

Engine App ├── db │ ├── migrate │ │ ├── 20140614100712_create_tasks.rb │ │ ├── 20140614100941_add_position_to_tasks.rb │ │ ├── 20140614101121_create_owners.rb $ rake todo:install:migrations ├── db │ ├── migrate │ │ ├── 20140614100712_create_tasks.todo.rb │ │ ├── 20140614100941_add_position_to_tasks.todo.rb │ │ ├── 20140614101121_create_owners.todo.rb

Engine kao library

Primjeri • Devise • ActiveAdmin • Spree • Kaminari

Engine kao dio aplikacije

Rails.application.routes.draw do root to: “pages#home” ! controller :pages do get “/about”, to: :about get “/terms”, to: :terms end resources :songs end Rails.application.routes.draw do root to: “pages#home ! controller :pages do get “/about”, to: :about get “/terms”, to: :terms end resources :songs ! # LEGACY ROUTES # ! get “/start” => redirect(“/”) get “/about-us” => redirect(“/about”) get “/home” => redirect(“/about”) resources :tracks, controller: :songs ! get “/home/songs” => redirect(“/songs”) get “/authenticate” => “devise#login” get “/auth/google” => “/authenticate” get “/sign_in” => redirect(“/login”)

├── app ├── config ├── db ├── lib ├── script ├── vendor ├── public

├── app ├── config ├── db ├── lib ├── script ├── vendor ├── public ├── engines

├── app ├── config ├── db ├── lib ├── script ├── vendor ├── public ├── engines │ └── legacy

ruby “2.1.2” ! source “https://rubygems.org” ! gem “rails”, “~> 4.1.1” gem “pg” ! gem “legacy”, path: “engines/legacy” ! group :assets do # … end Gemfile

Engine App Rails.application.routes.draw do controller :pages do get “/about”, to: :about get “/terms”, to: :terms end resources :songs ! ! end Rails.application.routes.draw do controller :pages do get “/about”, to: :about get “/terms”, to: :terms end resources :songs ! mount Legacy::Engine, at: “/” end Legacy::Engine.routes.draw do get “/start” => redirect(“/”) get “/about-us” => redirect(“/about”) get “/home” => redirect(“/about”) resources :tracks, controller: :songs end

class ApplicationControler < ActionController::Base # … ! private ! def current_user User.find_by(id: session[:user_id]) end ! def authenticate! if not user_signed_in? redirect_to sign_in_path end end ! # … end

├── app ├── config ├── db ├── lib ├── script ├── vendor ├── public ├── engines │ └── legacy

├── app ├── config ├── db ├── lib ├── script ├── vendor ├── public ├── engines │ └── legacy │ ├── authentication

Engine App class AuthController < ApplicationController def authenticate! # … end ! def current_user # … end end class ApplicationController < AC::Base before_filter :important_announcement ! private ! def important_announcement puts “Šime je glup” end end

Izolirani Engine Todo Views Routes Helpers

module Todo class Engine < Rails::Engine ! end end module Todo class Engine < Rails::Engine isolate_namespace Todo end end Izolirani Engine

Izolirani Engine todo.root_path todo.tasks_path todo.new_task_path URL helpers

Izolirani Engine main_app.root_path main_app.about_path main_app.terms_path URL helpers

Izolirani Engine Todo Views Routes Helpers

Izolirani Engine Views Routes Helpers Todo

Izolirani Engine Views Routes Helpers Authentication Legacy Todo Blog Marketing Mobile

Rails::Engine Rails::Application Rails::Railtie

Railtie initializers rake tasks

Railtie Engine MVC routes initializers rake tasks

Railtie Engine Application MVC routes initializers rake tasks booting initializing middleware

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