It would be hard to create Rails without ActiveSupport

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@rawpixel on Unsplash

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Muhammad Mufid Afif https://mufid.github.io

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@mufid

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@mufid CATS

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@mufid Neko Atsume LOLOLOLOL

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Rails’ing since 2012 Professionally 2015

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SaaS Platform & IoT Devices

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@rawpixel on Unsplash

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@rawpixel on Unsplash

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$ rails console

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$ rails console Loading development environment (Rails 5.1.4) 2.3.5 :001 > 1+1 => 2

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$ irb

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$ irb

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$ irb 2.3.5 :001 > 1+1 => 2

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$ irb 2.3.5 :001 > 1+1 => 2 $ rails console Loading development environment (Rails 5.1.4) 2.3.5 :001 > 1+1 => 2

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$ irb 2.3.5 :001 > 1.days.ago $ rails console Loading development environment (Rails 5.1.4) 2.3.5 :001 > 3.days.ago

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$ irb 2.3.5 :001 > 1.days.ago NoMethodError: undefined method `days' for 3:Fixnum $ rails console Loading development environment (Rails 5.1.4) 2.3.5 :001 > 3.days.ago => Mon, 25 Jun 2018 09:11:12 UTC +00:00

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$ irb 2.3.5 :001 > 1.days.ago NoMethodError: undefined method `days' for 3:Fixnum 2.3.5 :002 > require 'active_support/all'

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$ irb 2.3.5 :001 > 1.days.ago NoMethodError: undefined method `days' for 3:Fixnum 2.3.5 :002 > require 'active_support/all' => true

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$ irb 2.3.5 :001 > 1.days.ago NoMethodError: undefined method `days' for 3:Fixnum 2.3.5 :002 > require 'active_support/all' => true 2.3.5 :003 > 3.days.ago => 2018-06-25 16:13:24 +0700

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MOST RAILS MAGIC COMES FROM ACTIVESUPPORT Trivia #1

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YOU CAN USE ACTIVESUPPORT WITHOUT RAILS Trivia #1

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Can you use Rails without ActiveRecord?

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Can you use Rails without ActiveRecord? Yes

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable?

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable? Yes

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable? Yes Can you use Rails without ActiveStorage?

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable? Yes Can you use Rails without ActiveStorage? Yes

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable? Yes Can you use Rails without ActiveStorage? Yes Can you use Rails without ActiveJob?

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable? Yes Can you use Rails without ActiveStorage? Yes Can you use Rails without ActiveJob? Yes

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Can you use Rails without ActiveRecord? Yes Can you use Rails without ActionCable? Yes Can you use Rails without ActiveStorage? Yes Can you use Rails without ActiveJob? Yes Can you use Rails without ActiveSupport?

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actioncable (5.1.4) actionpack (= 5.1.4) nio4r (~> 2.0) websocket-driver (~> 0.6.1)

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actioncable (5.1.4) actionpack (= 5.1.4) nio4r (~> 2.0) websocket-driver (~> 0.6.1) actionpack (5.1.4) actionview (= 5.1.4) activesupport (= 5.1.4) rack (~> 2.0) rack-test (>= 0.6.3) rails-dom-testing (~> 2.0) rails-html-sanitizer (~> 1.0, >= 1.0.2)

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actionview (5.1.4) activesupport (= 5.1.4) builder (~> 3.1) erubi (~> 1.4) rails-dom-testing (~> 2.0) rails-html-sanitizer (~> 1.0, >= 1.0.3)

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activejob (5.1.4) activesupport (= 5.1.4) globalid (>= 0.3.6)

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activemodel (5.1.4) activesupport (= 5.1.4)

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activerecord (5.1.4) activemodel (= 5.1.4) activesupport (= 5.1.4) arel (~> 8.0)

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YOU CAN’T USE RAILS WITHOUT ACTIVESUPPORT Trivia #2

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@fancycrave - Unsplash

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> "User".class => String

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> "User".constantize.class => Class

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> "User".constantize.find(1) User Load (25.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]] => #

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> "User".find(1) User Load (25.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]] => #

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ActiveSupport::Notifications

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ActiveSupport::Notifications Built-in pub sub for those who doesn’t need ActionCable

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ActiveSupport::Notifications Built-in pub sub for those who doesn’t need ActionCable Instrumentation

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ActiveSupport::Notifications.subscribe "deliver.action_mailer" do |*args| event = ActiveSupport::Notifications::Event.new(*args) tags = { mailer: event.payload[:mailer] } collector.increment "rails.mail.sent", tags: tags, inherit_tags: true end

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Librato Gem

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Action Controller write_fragment.action_controller read_fragment.action_controller expire_fragment.action_controller exist_fragment?.action_controller write_page.action_controller expire_page.action_controller start_processing.action_controller process_action.action_controller send_file.action_controller send_data.action_controller redirect_to.action_controller halted_callback.action_controller unpermitted_parameters.action_controller Action View render_template.action_view render_partial.action_view render_collection.action_view Active Record sql.active_record instantiation.active_record

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Action Mailer receive.action_mailer deliver.action_mailer process.action_mailer Active Support cache_read.active_support cache_generate.active_support cache_fetch_hit.active_support cache_write.active_support cache_delete.active_support cache_exist?.active_support Active Job enqueue_at.active_job enqueue.active_job perform_start.active_job perform.active_job Action Cable perform_action.action_cable transmit.action_cable transmit_subscription_confirmation.action_cable transmit_subscription_rejection.action_cable broadcast.action_cable

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Active Storage service_upload.active_storage service_streaming_download.active_storage service_download.active_storage service_delete.active_storage service_delete_prefixed.active_storage service_exist.active_storage service_url.active_storage Railties load_config_initializer.railties

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A LOT of features

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Omakase

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MIT License! Copy anything you want Copy anything you need

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Don’t waste your time What you need might have been covered in ActiveSupport

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That’s All!

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THANKYOU NO Q&A but let’s talk on the SOURCE CODE AND SLIDE: SPEAKERDECK.COM/MUFID i am mufid let’s make software, better, together! mail me privately at [email protected] or tweet publicly to me to @mufid