Best Rails Book You've Never Read

Transcript

1. The best Rails book you’ve never read. DAMIR SVRTAN

2. 01 RUBY/RAILS BOOKS

3. WELL KNOWN BOOKS POODR Sandi Metz RoR Tutorial Michael Hartl

   Pickaxe David Thomas Metaprogramming Ruby Paolo Perrotta

4. and many more..

5. 02 REBUILDING RAILS

6. None

7. NOAH GIBBS

8. Get your hands dirty and build your own Ruby Web

   Framework - NOAH GIBBS

9. RAILS INTERNALS CAN TEACH YOU A LOT…

10. NOT JUST READING - ALSO LOTS OF CODING

11. BUILD YOUR OWN GEM bundler new my_framework

12. PUBLISH YOUR FIRST GEM push it to rubygems.org

13. LEARN HOW RACK WORKS what is Rack?

14. Browser App Server RACK Ruby App

15. ALMOST EVERY RUBY FRAMEWORK USES IT! Rails, Sinatra, Hanami, Roda..

16. # config.ru require 'rack' class MyApp def call(env) [200, {

    'Content-Type' => 'text/html' }, ["Hello World"]] end end run MyApp.new

17. run object.call

18. run proc { |env| [200, { 'Content-Type' => 'text/html' },

    [Time.now] }

19. # config.ru require 'rack' class MyApp def call(env) [200, {

    'Content-Type' => 'text/html' }, ["Hello World"]] end end run MyApp.new

20. env argument

21. { "SERVER_SOFTWARE"=>"THIN 1.6.3 CODENAME PROTEIN POWDER", "SERVER_NAME"=>"LOCALHOST", "RACK.INPUT"=>#<STRINGIO:0X007FFD50C4A9C8>, "RACK.VERSION"=>[1, 0],

    "RACK.ERRORS"=>#<IO:<STDERR→, "RACK.MULTITHREAD"=>FALSE, "RACK.MULTIPROCESS"=>FALSE, "RACK.RUN_ONCE"=>FALSE, "REQUEST_METHOD"=>"GET", "REQUEST_PATH"=>"/", "PATH_INFO"=>"/", "REQUEST_URI"=>"/", "HTTP_VERSION"=>"HTTP/1.1", "HTTP_HOST"=>"LOCALHOST:3000", "HTTP_CONNECTION"=>"KEEP-ALIVE", "HTTP_CACHE_CONTROL"=>"MAX-AGE=0", "HTTP_UPGRADE_INSECURE_REQUESTS"=>"1", "HTTP_USER_AGENT"=>"MOZILLA/5.0 (MACINTOSH; INTEL MAC OS X 10_11_3) APPLEWEBKIT/537.36 (KH™L, LIKE GECKO) CHROME/51.0.2704.103 SAFARI/537.36", "HTTP_ACCEPT"=>"TEXT/H™L,APPLICATION/XH™L+XML,APPLICATION/XML;Q=0.9,IMAGE/WEBP,*/*;Q=0.8", "HTTP_ACCEPT_ENCODING"=>"GZIP, DEFLATE, SDCH", "HTTP_ACCEPT_LANGUAGE"=>"EN-US,EN;Q=0.8", "HTTP_COOKIE"=> "", "GATEWAY_INTERFACE"=>"CGI/1.2", "SERVER_PORT"=>"3000", "QUERY_STRING"=>"", "SERVER_PROTOCOL"=>"HTTP/1.1", "RACK.URL_SCHEME"=>"HTTP", "SCRIPT_NAME"=>"", "REMOTE_ADDR"=>"127.0.0.1" }

22. # config.ru require 'rack' class MyApp def call(env) [200, {

    'Content-Type' => 'text/html' }, ["Hello World"]] end end run MyApp.new

23. [200, { 'Content-Type' => 'text/html' }, ["Hello World”]]

24. use Rack::Session::Cookie, :secret => 'abc123' use BetterErrors::Middleware if Noodles.env.development? use

    Rack::CommonLogger, $stdout use Rack::ContentType use Rack::MethodOverride use Rack::Static, urls: ["/css", "/images", "/js", "/favicon.ico"], root: "public" run Noodles.application

25. BUILD YOUR OWN ROUTER

26. Noodles.http_app.routes do root_to 'home#index' get 'chat', 'chat#index' get "auth/:provider/callback", 'session#success'

    get "auth/failure", 'session#failure' post "rooms", "rooms#create" delete "logout", 'session#logout' resources :users end

27. BUILD YOUR OWN CONTROLLERS

28. class RoomsController < BaseController def create room = Room.new(name: params['name'],

    public: true) room.save! redirect_to ‘/' end end

29. HOW TO LOAD CONTROLLERS?

30. HOW TO LOAD RAILS CONTROLLERS? Rails magic autoloading

31. require ‘users_controller’

32. $LOAD_PATH

33. puts $LOAD_PATH [ "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/eventmachine-1.0.7/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/daemons-1.1.9/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/thin-1.6.3/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/slop-3.6.0/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/method_source-0.8.2/lib",

    "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/pry-0.10.3/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/coderay-1.1.1/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/pry-byebug-3.3.0/lib", "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/byebug-8.2.4/lib" ]

34. puts $LOAD_PATH [ "/Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib" ] ls /Users/damirsvrtan/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean core_ext formatter.rb spell_checkable.rb

    version.rb extra_features jaro_winkler.rb spell_checkers extra_features.rb levenshtein.rb verbose_formatter.rb require 'did_you_mean/extra_features'
35. None

36. controllers_folder_path = File.join("app", "controllers") $LOAD_PATH << controllers_folder_path

37. method_missing?

38. const_missing?

39. class Object def self.const_missing(constant) require Noodles.to_underscore(constant.to_s) Object.const_get(constant) end end Admin::UsersController

    -> admin/users_controller

40. Learn how redirects work (30× status)

41. Learn how render and ERB work (use haml, slim, tilt)

42. Learn how cookies work

43. class UsersController < ApplicationController def index cookies[:favorite_color] ||= :black end

    end

44. class UsersController < ApplicationController def index unless request.cookies[:favorite_color] == :black

    response.headers.push('Set-Cookie', 'favorite_color=black') end end end

45. Build your own small ORM

46. 03 BENEFITS

47. REINVENTING THE WHEEL

48. BETTER GRASP ON RAILS, RACK, GEMS & THE HTTP LAYER

49. None

50. Any questions? DAMIR.SVRTAN@INFINUM.CO @DAMIRSVRTAN Visit infinum.co or find us on

    social networks: infinum.co infinumco infinumco infinum