Hidden things from Rails 5

Talk given at Rubyconf.ph 2017

Transcript

1. Hidden features of Rails 5
2. Prathamesh Sonpatki @_cha1tanya csonpatki@gmail.com
4. Pune, India
5. Pune, India
6. Pune, India
7. Pune, India
8. Pune, India
9. I also got more professional skills
10. PHP
12. I don’t have Stickers
13. Stickers
14. T-Shirts are fine too
20. New welcome page
22. Rendering views outside of controller
23. Rendering views outside of controller
24. Rendering views outside of controller
25. OrdersController.render :show
26. OrdersController.render :show
27. OrdersController.render json: Order.all
28. OrdersController.render :show
29. OrdersController.render :show, assigns: { order: Order.last } # /app/views/orders/show.html.erb <%= @order.uid %>
30. OrdersController.render :show, assigns: { order: Order.last } # /app/views/orders/show.html.erb <%= @order.uid %>
31. Request environment
32. request.env
33. Request environment
34. Request environment
35. >> OrdersController.renderer.defaults => {:http_host=>"example.org", :https=>false, :method=>"get", :script_name=>"", :input=>""}
36. renderer = OrdersController.renderer.new(https: true) renderer.render template: ‘show'
37. renderer = OrdersController.renderer.new(https: true) renderer.render template: ‘show' # order_url => “https://example.org/orders/1”
38. https://github.com/brainopia/backport_new_renderer
39. Faster rendering of partials from cache
40. # index.html.erb <%= render partial: 'todo', collection: @todos %> # _todo.html.erb <% cache todo do %> <%= todo.name %> <% end %>
41. # index.html.erb <%= render partial: 'todo', collection: @todos %> # _todo.html.erb <% cache todo do %> <%= todo.name %> <% end %>
43. Folded into Rails 5
44. # index.html.erb <%= render partial: 'todo', collection: @todos, cached: true %> # _todo.html.erb <% cache todo do %> <%= todo.name %> <% end %>
46. Per job active job adapter
47. Per job active job adapter
48. config.active_job.queue_adapter = :sidekiq
49. config.active_job.queue_adapter = :sidekiq
50. config.active_job.queue_adapter = :sidekiq
51. class EmailJob < ActiveJob::Base self.queue_adapter = :sidekiq end class NewletterJob < ActiveJob::Base self.queue_adapter = :delayed_job end
52. class EmailJob < ActiveJob::Base self.queue_adapter = :sidekiq end class NewletterJob < ActiveJob::Base self.queue_adapter = :delayed_job end EmailJob.queue_adapter => #<ActiveJob::QueueAdapters::SidekiqAdapter: 0x007fb3d0b2e4a0> NewletterJob.queue_adapter => #<ActiveJob::QueueAdapters::DealyedJobAdapter: 0x007fb3d0c61b88>
53. Caching in development
54. Caching in development
55. # config/environments/development.rb config.action_controller.perform_caching = false
56. # config/environments/development.rb config.action_controller.perform_caching = true
57. $ rails dev:cache Development mode is now being cached.
58. config.action_controller.perform_caching = true config.static_cache_control = "public, max- age=172800" config.cache_store = :mem_cache_store
59. $ rails dev:cache Development mode is no longer being cached.
60. Puma as default web server
61. Puma as default web server
62. Silent asset logs in development
63. Started GET "/assets/ application.self-4a04ce68c5ebf2d39fba46316802f17d0 a73fadc4d2da50a138d7a4bf2d26a84.css?body=1" for 127.0.0.1 at 2016-09-02 10:23:04 +0530 Started GET "/assets/bootstrap/ transition.self-6ad2488465135ab731a045a8ebbe3ea2fc 501aed286042496eda1664fdd07ba9.js?body=1" for 127.0.0.1 at 2016-09-02 10:23:04 +0530
64. # config/environments/development.rb config.assets.quiet = true
65. Finer control over SSL usage
66. Redirect http to https
67. Redirect http to https
68. config.force_ssl = true config.ssl_options = { redirect: { status: 307, port: 81 } }
69. HSTS headers
70. config.ssl_options = { hsts: { preload: true } }
71. config.ssl_options = { hsts: { expires: 10.days } }
72. Controller actions default to 204 No Content
75. Browser request
76. def create @post = Post.new(post_params) if @post.save redirect_to @post, notice: 'Post was successfully created.’ else render ‘new’ end end
77. Started POST "/posts" for ::1 at 2016-06-02 09:24:53 -0400 Processing by PostsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"FaRp8NUAZWIW0WnMzLpKKQht9WWeTxeSvOvO2GeFpkGbOXzYEnvxTKEZf7gwY 4oy6cW+GRQ3UE6Zu0iXGB4I5A==", "post"=>{"content"=>"hello"}, "commit"=>"Create Post"} (0.2ms) begin transaction SQL (0.3ms) INSERT INTO "posts" ("content", "created_at", "updated_at") VALUES (?, ?, ?) [["content", "hello"], ["created_at", 2016-06-02 13:24:53 UTC], ["updated_at", 2016-06-02 13:24:53 UTC]] (0.7ms) commit transaction Redirected to http://localhost:3000/posts/1 Completed 302 Found in 6ms (ActiveRecord: 1.3ms)
78. def create @post = Post.new(post_params) if @post.save else render ‘new’ end end
80. Started POST "/posts" for ::1 at 2016-06-02 09:25:11 -0400 Processing by PostsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"RC46YER7l5yQz1J+DkZIWINBixkaMz9qWWlFzvZT8K3Ksy9IgwADsicHRAryn 4hDYunAZZBLeLZ8OcOBicheCA==", "post"=>{"content"=>"hello 2"}, "commit"=>"Create Post"} (0.0ms) begin transaction SQL (0.2ms) INSERT INTO "posts" ("content", "created_at", "updated_at") VALUES (?, ?, ?) [["content", "hello 2"], ["created_at", 2016-06-02 13:25:11 UTC], ["updated_at", 2016-06-02 13:25:11 UTC]] (1.5ms) commit transaction No template found for PostsController#create, rendering head :no_content Completed 204 No Content in 64ms (ActiveRecord: 2.2ms)
81. Started POST "/posts" for ::1 at 2016-06-02 09:25:11 -0400 Processing by PostsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"RC46YER7l5yQz1J+DkZIWINBixkaMz9qWWlFzvZT8K3Ksy9IgwADsicHRAryn 4hDYunAZZBLeLZ8OcOBicheCA==", "post"=>{"content"=>"hello 2"}, "commit"=>"Create Post"} (0.0ms) begin transaction SQL (0.2ms) INSERT INTO "posts" ("content", "created_at", "updated_at") VALUES (?, ?, ?) [["content", "hello 2"], ["created_at", 2016-06-02 13:25:11 UTC], ["updated_at", 2016-06-02 13:25:11 UTC]] (1.5ms) commit transaction No template found for PostsController#create, rendering head :no_content Completed 204 No Content in 64ms (ActiveRecord: 2.2ms)
82. Don’t forget to respond
83. Don’t forget to me
84. ActionController Parameters no longer inherits from hash ⚠
85. Action Controller Parameters decide what to permit and what to not
86. user_params.is_a? Hash #=> true
87. user_params.is_a? ActionController::Parameters #=> true
88. user_params.to_h # Safe hash
89. user_params.to_unsafe_h # Unsafe hash
90. >> user_params.inject DEPRECATION WARNING: Method inject is deprecated and will be removed in Rails 5.1, as `ActionController::Parameters` no longer inherits from hash. Using this deprecated behavior exposes potential security problems. If you continue to use this method you may be creating a security vulnerability in your app that can be exploited. Instead, consider using one of these documented methods which are not deprecated: http://api.rubyonrails.org/v5.0.0/classes/ActionController/ Parameters.html
91. Fragment Caching Action Mailer views
92. Fragment Caching Action Mailer views
93. config.action_mailer.perform_caching = true
94. <body> <% cache 'signup-text' do %> <h1>Welcome!</h1> <p>You have successfully signed up. Your username is: <br /> <% end %> <%= @user.login %>. <br /> </p> <%= render :partial => 'footer' %> </body>
95. <body> <% cache 'signup-text' do %> <h1>Welcome!</h1> <p>You have successfully signed up. Your username is: <br /> <% end %> <%= @user.login %>. <br /> </p> <%= render :partial => 'footer' %> </body>
96. Cache digest for app/views/user_mailer/_footer.erb: 7313427d26cc1f701b1e0212498cee38 Cache digest for app/views/user_mailer/welcome_email.html.erb: 30efff0173fd5f29a88ffe79a9eab617 Rendered user_mailer/_footer.erb (0.3ms) Rendered user_mailer/welcome_email.html.erb (26.1ms) Cache digest for app/views/user_mailer/welcome_email.text.erb: 77f41fe6159c5736ab2026a44bc8de55 Rendered user_mailer/welcome_email.text.erb (0.2ms) UserMailer#welcome_email: processed outbound mail in 190.3ms
97. Want to know more about Rails 5?
98. Rails 5 Blog Series blog.bigbinary.com /categories/Rails-5
99. Rails 5 Blog Series blog.bigbinary.com /categories/Rails-5
101. This Week in Rails rails-weekly. ongoodbits.com
102. This Week in Rails rails-weekly. ongoodbits.com
103. Rails 5.1.0 beta1 is out!
104. Fin @_cha1tanya @BigBinary csonpatki@gmail.com