Trailblazerの紹介

TokyuRuby会議09(http://regional.rubykaigi.org/tokyu09)、Trailblazer::Tokyo (http://connpass.com/event/20137/) にて発表

Transcript

1. Trailblazer Trailblazer @kbaba1001 Powered by Rabbit 2.1.6 and COZMIXNG
2. 自己紹介 kbaba1001 Ruby on Rails
3. 最近 Rails をやめたいという話をたまに 聞く気がする
4. Railsのあるある 規模が大きくなるとメンテナンス がつらい
5. つらみ Fat Model ビジネスロジックのある Controller カオス partial
6. つらみ… default_scope nested_attributes_for validation を if オプションで切 り替え Rails Engine 使う gem の拡張
7. では Rails をやめるべきな のか? 別の言語(Go、Scala、Elixir) 別のFW(padrino、lotus) 先駆者になる(Trailblazer)
8. Trailblazer https://leanpub.com/trailblazer
9. 何？ A new architecture for Rails.
10. A new architecture
11. A Concept-Driven OOP Framework app ├── concepts │ ├── comment │ │ ├── views │ │ │ ├── show.haml │ │ │ ├── list.haml │ │ ├── assets │ │ │ ├── comment.css.sass │ │ ├── cell.rb │ │ ├── operation.rb │ │ ├── twin.rb
12. Trailblazer の特徴 ビジネスロジックをMVCから分 離して concepts 以下にまとめ る MVCを疎結合にしてメンテナン ス性の向上する テストしやすくする
13. MVC Modelにはassociationとscope だけ Viewはconcept毎にViewModel として分割 ControllerにはHTTPエンドポイ ントとしてのロジックだけ
14. ビジネスロジック CRUD validation/callback Viewのためのロジック Worker
15. Model class Thing < ActiveRecord::Base has_many :comments, -> { order(created_at: :desc) } has_many :users, through: :authorships has_many :authorships scope :latest, lambda { all.limit(9).order("id DESC") } end
16. Controller class ThingsController < ApplicationController def create run Thing::Create do |op| return redirect_to(thing_path op.model) # success. end render :new # re-render form. end
17. View .comments = concept("comment/cell", collection: comments)
18. Trailblazer Operation Cell
19. Operation class Thing < ActiveRecord::Base class Create < Trailblazer::Operation include CRUD model Thing, :create contract do property :name property :description validates :name, presence: true validates :description, length: {in: 4..160}, allow_blank: true end def process(params) validate(params[:thing]) do |f| f.save end end end
20. Controller class ThingsController < ApplicationController def create run Thing::Create do |op| return redirect_to(thing_path op.model) # success. end render :new # re-render form. end
21. View 普通のview cells
22. cells ViewModel メソッドとassetsのあるpartial
23. Viewからcellを呼び出す .comments = concept("comment/cell", collection: comments)
24. cell # app/concepts/comment/cell.rb class Comment::Cell < Cell::Concept property :body property :author def show render end private def author_link link_to "#{author.email}", author end end
25. cellのview # app/concepts/comment/views/show.erb %h3 New Comment %p= body %p= author_link
26. テスト Operation、cellのテストを行うこ とでfeature、requestテストを減 らす
27. Operation Test it "persists valid" do thing = Thing::Create[ thing: { name: "Rails", description: "Kickass web dev" } ].model thing.persisted?.must_equal true thing.name.must_equal "Rails" thing.description.must_equal "Kickass web dev" end
28. Cell の Test class CommentCellTest < Cell::TestCase controller ThingsController it do html = concept("comment/cell") html = Capybara.string(html) comments = html.all(:css, ".comment") first = comments[0] comments[0].find(".header").must_have_content "hilz@trb.org" comments[0].find(".header time")["datetime"].must_match /\d\d-/
29. その他 callback worker json
30. 詳しくは https://leanpub.com/trailblazer Powered by Rabbit 2.1.6 and COZMIXNG