Reinvesting in Ruby

As our community matures, and technology evolves around us, how can we ensure Ruby remains vital?

Opening keynote, RubyConf AU 2017

Transcript

1. Reinvesting in Ruby RubyConf AU 2017
2. Hello!
3. @timriley
4. Present Ruby Different Ruby Future Ruby
5. Present Ruby
6. We’ve come a long way
10. Rails 1.0: Party like it's one oh oh! Posted by David December 13, 2005 @ 09:02 PM
12. Ruby 2.4.0 released (ruby-lang.org) 1. Android adopts JRuby: “It’s Java without the Java” (android.com) 2. Why Atom chose Ruby (atom.io) 3. Rubocop saved my life (medium.com) 4.
15. rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new rails new
16. Nope
17. Challenges
18. Competition
19. Competition
20. Consolidation
22. Transition
23. @timriley I have just realised I do not remember the last ruby I wrote — @johnbarton
24. Complacency
25. Tools
26. Culture
27. Ruby has real worth
28. Open source communities are non-exclusive
29. Open source communities are like sharks; they need to keep moving forward. — Matz
30. Reconsider Ruby
31. Ruby moves slowly
32. We’ll all get nice improvements, eventually
33. Ruby is ours
34. Ruby evolves
35. Ruby is evolving
36. Different Ruby
37. dry-rb
40. Code time!
41. Functional Ruby
42. Functions as values Immutability Avoid side effects
43. Functional objects
44. class CreateArticle def call(input) output = some_action output end end
45. class CreateArticle def call(input) output = some_action output end end
46. Separate data from behaviour
47. class CreateArticle attr_reader :repo def initialize(repo) @repo = repo end def call(input) repo.create(input) end end
48. # Initialize once create_article = CreateArticle.new(repo) # Reuse many times create_article.(title: "Hello Melbourne") create_article.(title: "Hello World!”)
49. # Initialize once create_article = CreateArticle.new(repo) # Reuse many times create_article.(title: "Hello Melbourne") create_article.(title: "Hello World!”)
50. 12 gems, 15 minutes, 1 blog.
51. One stack of many
52. GET /articles
53. Routing & HTTP Object dependency management Views Data modelling 1 2 3 4
54. Routing & HTTP dry-web-roda GET /articles 1
55. Routing & HTTP dry-web + roda GET /articles 1
56. $ gem install dry-web-roda $ dry-web-roda new blog
57. $ gem install dry-web-roda $ dry-web-roda new blog
58. . ├── Gemfile ├── README.md ├── Rakefile ├── apps │ └── main │ ├── lib │ │ └── main │ │ └── views │ │ └── welcome.rb │ ├── system │ │ ├── boot │ │ │ └── view.rb │ │ ├── boot.rb │ │ └── main │ │ ├── application.rb │ │ ├── container.rb │ │ ├── import.rb │ │ ├── transactions.rb │ │ ├── view_context.rb │ │ └── view_controller.rb
59. class Blog::Application < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end end end
60. class Blog::Application < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end end end
61. class Blog::Application < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end end end
62. Object dependency management dry-system GET /articles 2
63. r.view "articles.index" Blog::Container["views.articles.index"] #<Blog::Views::Article::Index> # lib/blog/views/articles/index.rb
64. r.view "articles.index" Blog::Container["views.articles.index"] #<Blog::Views::Article::Index> # lib/blog/views/articles/index.rb
65. r.view "articles.index" Blog::Container["views.articles.index"] #<Blog::Views::Article::Index> # lib/blog/views/articles/index.rb
66. r.view "articles.index" Blog::Container["views.articles.index"] #<Blog::Views::Article::Index> # lib/blog/views/articles/index.rb
67. require $LOAD_PATH
68. Views dry-view GET /articles 3
69. class Index < Blog::ViewController configure do |config| config.template = "articles/index" end end
70. class Index < Blog::ViewController configure do |config| config.template = "articles/index" end end
71. Object dependency management dry-auto_inject GET /articles 2
72. class Index < Blog::ViewController configure do |config| config.template = "articles/index" end include Blog::Import[repo: "blog.repositories.articles"] expose :articles do repository.listing end end
73. class Index < Blog::ViewController configure do |config| config.template = "articles/index" end include Blog::Import[repo: "repositories.articles"] expose :articles do repository.listing end end
74. class Index < Blog::ViewController configure do |config| config.template = "articles/index" end include Blog::Import[repo: "repositories.articles"] expose :articles do repo.listing end end
75. Data modelling dry-types & dry-struct GET /articles 4
76. class Article < Dry::Struct attribute :title, Types::Strict::String attribute :body, Types::Strict::String attribute :published_at, Types::Strict::Time end
77. class Article < Dry::Struct attribute :title, Types::Strict::String attribute :body, Types::Strict::String attribute :published_at, Types::Strict::Time end
78. class Article < Dry::Struct attribute :title, Types::Strict::String attribute :body, Types::Strict::String attribute :published_at, Types::Strict::Time end
79. ol - articles.each do |article| li = article.title r.view “articles.index” <ol> <li>Hello Melbourne</li> <li>Hello World</li> </ol>
80. ol - articles.each do |article| li = article.title r.view "articles.index" <ol> <li>Hello Melbourne</li> <li>Hello World</li> </ol>
81. ol - articles.each do |article| li = article.title r.view "articles.index" <ol> <li>Hello Melbourne</li> <li>Hello World</li> </ol>
82. ol - articles.each do |article| li = article.title r.view "articles.index" <ol> <li>Hello Melbourne</li> <li>Hello World</li> </ol>
83. ol - articles.each do |article| li = article.title Blog::Container["views.articles.index"].() <ol> <li>Hello Melbourne</li> <li>Hello World</li> </ol>
84. class Blog < Dry::Web::Application route do |r| r.get "articles" do r.view "articles.index" end end end
85. GET /articles
86. Routing & HTTP dry-web-roda Object dependency management dry-system & dry-auto_inject Views dry-view Data modelling dry-types & dry-struct 1 2 3 4
87. POST /articles
88. Validation Success & error handling 1 2
89. class MyApp < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end r.post "articles" do r.resolve "operations.create_article" do |create| create.(r[:article]) end end end end
90. class MyApp < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end r.post "articles" do r.resolve "operations.create_article" do |create| create.(r[:article]) end end end end
91. class MyApp < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end r.post "articles" do r.resolve "operations.create_article" do |create| create.(r[:article]) end end end end
92. class MyApp < Dry::Web::Roda::Application route do |r| r.get "articles" do r.view "articles.index" end r.post "articles" do r.resolve "operations.create_article" do |create| create.(r[:article]) end end end end
93. r.resolve "operations.create_article" Blog::Container["operations.create_article"] #<Blog::Operations::CreateArticle> # lib/blog/operations/create_article.rb
94. r.resolve "operations.create_article" Blog::Container["operations.create_article"] #<Blog::Operations::CreateArticle> # lib/blog/operations/create_article.rb
95. r.resolve "operations.create_article" Blog::Container["operations.create_article"] #<Blog::Operations::CreateArticle> # lib/blog/operations/create_article.rb
96. r.resolve "operations.create_article" Blog::Container["operations.create_article"] #<Blog::Operations::CreateArticle> # lib/blog/operations/create_article.rb
97. class CreateArticle def call(input) result = Validation::ArticleSchema.(input) end end
98. class CreateArticle def call(input) result = Validation::ArticleSchema.(input) end end
99. Validation dry-validation POST /articles 1
100. module Validation ArticleSchema = Dry::Validation.Form do required(:title).filled(min_size?: 3) required(:body).filled required(:published).filled(:bool?) required(:published_at).filled(:time?) end end
101. module Validation ArticleSchema = Dry::Validation.Form do required(:title).filled(min_size?: 3) required(:body).filled required(:published).filled(:bool?) required(:published_at).filled(:time?) end end
102. module Validation ArticleSchema = Dry::Validation.Form do required(:title).filled(min_size?: 3) required(:body).filled required(:published).filled(:bool?) required(:published_at).filled(:time?) end end
103. module Validation ArticleSchema = Dry::Validation.Form do required(:title).filled(min_size?: 3) required(:body).filled required(:published).filled(:bool?) required(:published_at).filled(:time?) end end
104. module Validation ArticleSchema = Dry::Validation.Form do required(:title).filled(min_size?: 3) required(:body).filled required(:published).filled(:bool?) required(:published_at).filled(:time?) end end
105. input = { "title" => "Hello Melbourne", "body" => "Why I always forget my umbrella", "published" => "1", "published_at" => "2017-02-09 09:50" } ArticleSchema.(input).to_h { title: "Hello Melbourne", body: "Why I always forget my umbrella" published: true, published_at: 2017-02-09 09:50:00 +1100 }
106. input = { "title" => "Hello Melbourne", "body" => "Why I always forget my umbrella", "published" => "1", "published_at" => "2017-02-09 09:50" } ArticleSchema.(input).to_h { title: "Hello Melbourne", body: "Why I always forget my umbrella" published: true, published_at: 2017-02-09 09:50:00 +1100 }
107. input = { "title" => "Hello Melbourne", "body" => "Why I always forget my umbrella", "published" => "1", "published_at" => "2017-02-09 09:50" } ArticleSchema.(input).to_h { title: "Hello Melbourne", body: "Why I always forget my umbrella" published: true, published_at: 2017-02-09 09:50:00 +1100 }
108. input = { "title" => "Hello Melbourne", "body" => "Why I always forget my umbrella", "published" => "1", "published_at" => "2017-02-09 09:50" } ArticleSchema.(input).to_h { title: "Hello Melbourne", body: "Why I always forget my umbrella" published: true, published_at: 2017-02-09 09:50:00 +1100 }
109. input = { "title" => "Hello Melbourne", "body" => "Why I always forget my umbrella", "published" => "1", "published_at" => "2017-02-09 09:50" } ArticleSchema.(input).to_h { title: "Hello Melbourne", body: "Why I always forget my umbrella" published: true, published_at: 2017-02-09 09:50:00 +1100 }
110. ArticleSchema.("published" => "1").messages { :title => [ "is missing", "size cannot be less than 3"], :body => ["is missing"], :published_at => ["is missing"] }
111. ArticleSchema.("published" => "1").messages { :title => [ "is missing", "size cannot be less than 3"], :body => ["is missing"], :published_at => ["is missing"] }
112. class CreateArticle include Blog::Import[repo: "repositories.articles"] def call(input) validation = Validation::ArticleSchema.(input) if validation.success? result = repo.create(validation) Article.new(result) end end end
113. class CreateArticle include Blog::Import[repo: "repositories.articles"] def call(input) validation = Validation::ArticleSchema.(input) if validation.success? repo.create(validation) end end end
114. class CreateArticle include Blog::Import[repo: "repositories.articles"] def call(input) validation = Validation::ArticleSchema.(input) if validation.success? repo.create(validation) end end end
115. Success & failure handling dry-monads & dry-matcher POST /articles 2
116. def call(input) validation = Validation::ArticleSchema.(input) if validation.success? result = articles.create(validation) Right(result) end end
117. def call(input) validation = Validation::ArticleSchema.(input) if validation.success? result = articles.create(validation) Right(result) end end
118. def call(input) validation = Validation::ArticleSchema.(input) if validation.success? result = articles.create(validation) Right(result) else Left(validation) end end
119. r.post do r.resolve "operations.create_article" do |create| create.(r[:article]) m.success do r.redirect "/articles" end m.failure do |validation| r.view "articles.new", validation: validation end end end end
120. r.post do r.resolve "operations.create_article" do |create| create.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure do |validation| r.view "articles.new", validation: validation end end end end
121. r.post do r.resolve "operations.create_article" do |create| create.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure do |validation| r.view "articles.new", validation: validation end end end end
122. r.post do r.resolve "operations.create_article" do |create| create.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure do |validation| r.view "articles.new", validation: validation end end end end
123. r.post do r.resolve "operations.create_article" do |create| create.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure do |validation| r.view "articles.new", validation: validation end end end end
124. POST /articles
125. Validation dry-validation Success & error handling dry-monads & dry-matcher 1 2
126. dry-rb
127. dry-rb
128. Change
129. New feature Email articles to subscribers
130. dry-transaction
131. Blog::Transactions.define do |t| t.define "transactions.create_article" do step :create, with: "operations.create_article" step :notify, with: "operations.notify_subscribers" end end
132. Blog::Transactions.define do |t| t.define "transactions.create_article" do step :create, with: "operations.create_article" step :notify, with: "operations.notify_subscribers" end end
133. Blog::Transactions.define do |t| t.define "transactions.create_article" do step :create, with: "operations.create_article" step :notify, with: "operations.notify_subscribers" end end
134. Blog::Transactions.define do |t| t.define "transactions.create_article" do step :create, with: "operations.create_article" step :notify, with: "operations.notify_subscribers" end end
135. create_article.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure :create do |errors| r.view "articles.new", validation: errors end m.failure :notify do |error| # ... end end
136. create_article.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure :create do |errors| r.view "articles.new", validation: errors end m.failure :notify do |error| # ... end end
137. create_article.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure :create do |errors| r.view "articles.new", validation: errors end m.failure :notify do |error| # ... end end
138. create_article.(r[:article]) do |m| m.success do r.redirect "/articles" end m.failure :create do |errors| r.view "articles.new", validation: errors end m.failure :notify do |error| # ... end end
139. Change
140. Isolated testing
141. Simplicity
142. Clear separation of concerns
143. Clear flow of data
144. Design around boundaries
145. rom-rb
146. Design for the domain
147. Ruby, melting pot
148. A new kind of Ruby
149. A change-positive architecture
150. A change-positive app is maintainable
151. A change-positive app is sustainable
152. A change-positive app is joyful
153. dry-rb
154. dry-rb Icelab
155. Levelling up
156. Look Sandi Metz in the eye again
157. Levelling up
158. Better developers, better executing team
159. Ship without guilt
160. This is our future Ruby
161. Future Ruby
 for small teams
162. Future Ruby
 for large organisations
163. Let's say every company gets three innovation tokens. You can spend these however you want, but the supply is fixed. — Dan McKinley
164. Optimize globally
165. Deliver faster
166. Future Ruby
 for learners
167. Future Ruby
 for learners
168. Future Ruby
 in OSS
169. Hanami
170. Hanami dry-validation &
 rom-rb
172. Trailblazer dry-validation &
 dry-container/auto_inject
173. More to Ruby than you think
174. A healthy future for Ruby is diverse
175. if not us then "who?" end
176. Curiosity
177. Criticism
178. Cooperation
179. Cooperation
180. Celebration
181. Curiosity Criticism Cooperation Celebration!
182. Reinvest in Ruby
184. Thank you!