ActionDispatch ってなんだろう？

広島岡山Ruby交流会 01 での発表資料。 http://hirosimaokayamarb.doorkeeper.jp/events/8993

Railsのソースコードリーディングをしているので、その成果を発表です。
http://blog.eiel.info/blog/2014/03/30/action-dispatch/

Transcript

1. ActionDispatch
 ͬͯͳΜͩΖ͏ʁ 2014-03-29 ޿ౡɾԬࢁRubyަྲྀձ01
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8. Ruby on Rails • Railties • ActionPack • ActionDispatch • ActionController • AbstractController • ActiveModel • ActiveRecord • ActionView • ActiveSupport • ActionMailer
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29. ࣮ࡍʹݟͯΈΔ $ rails -v Rails 4.1.0.rc2 $ rails new hoge $ cd hoge # gem ‘pry-rails’ ͯ͠Δ͜ͱʹ͠ͱ͖·͢ $ rails c
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    ΞϓϦέʔγϣϯ > show-method Rails::Application#call def call(env) env["ORIGINAL_FULLPATH"] = build_original_fullpath(env) env["ORIGINAL_SCRIPT_NAME"] = env["SCRIPT_NAME"] super(env) end > show-method Rails::Engine#call def call(env) env.merge!(env_config) if env['SCRIPT_NAME'] env.merge! "ROUTES_#{routes.object_id}_SCRIPT_NAME" => env['SCRIPT_NAME' end app.call(env) end
32. 3BJMTBQQMJDBUJPOBQQ > Rails.application.app @app= #<ActionDispatch::Static:0x007fe97db880d0 @app= #<Rack::Lock:0x007fe97db88148 @app= #<ActiveSupport::Cache::Strategy::LocalCache::Midd 0x007fe97e35cc70 @app= #<Rack::Runtime:0x007fe97db88198 @app= #<Rack::MethodOverride:0x007fe97db881c0
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34. > Rails.application.middleware => #<ActionDispatch::MiddlewareStack:0x007fe97bcbaf68 @middlewares= [Rack::Sendfile, ActionDispatch::Static, Rack::Lock, #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x007fe97e35cc70>, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, Rack::Head, Rack::ConditionalGet, Rack::ETag]>
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36. > Rails.application.endpoint => #<ActionDispatch::Routing::RouteSet:0x007fe97dad1830> ! 
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47. require 'action_dispatch'! ! header = {'Content-Type' => 'text/html'}! ! routes = ActionDispatch::Routing::RouteSet.new! routes.draw do! get 'hello', to: -> env { [200, header, ['hello']] }! get 'goodbye', to: -> env { [200, header, ['goobye']] }! root to: -> env { [200, header, ['Hiroshima Okayama .rb']]}! end! ! Rack::Handler.default.run routes, Port: 3000
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