Best Rails Book You've Never Read

A presentation on all the benefits you gain after reading Rebuilding Rails by Noah Gibbs.

Transcript

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

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2. 01
   RUBY/RAILS BOOKS
   

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3. WELL KNOWN BOOKS
   POODR
   Sandi Metz
   RoR Tutorial
   Michael Hartl
   Pickaxe
   David Thomas
   Metaprogramming
   Ruby
   Paolo Perrotta
   

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4. and many more..
   

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5. 02
   REBUILDING RAILS
   

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7. NOAH GIBBS
   

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8. Get your hands dirty
   and build your own
   Ruby Web Framework
   - NOAH GIBBS
   

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9. RAILS INTERNALS CAN TEACH
   YOU A LOT…
   

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10. NOT JUST READING - ALSO
    LOTS OF CODING
    

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11. BUILD YOUR OWN GEM
    bundler new my_framework
    

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

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13. LEARN HOW RACK WORKS
    what is Rack?
    

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14. Browser
    App
    Server
    RACK
    Ruby
    App
    

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

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16. # config.ru
    require 'rack'
    class MyApp
    def call(env)
    [200, { 'Content-Type' => 'text/html' }, ["Hello World"]]
    end
    end
    run MyApp.new
    

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17. run object.call
    

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

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19. # config.ru
    require 'rack'
    class MyApp
    def call(env)
    [200, { 'Content-Type' => 'text/html' }, ["Hello World"]]
    end
    end
    run MyApp.new
    

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20. env argument
    

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21. {
    "SERVER_SOFTWARE"=>"THIN 1.6.3 CODENAME PROTEIN POWDER",
    "SERVER_NAME"=>"LOCALHOST",
    "RACK.INPUT"=>#,
    "RACK.VERSION"=>[1, 0],
    "RACK.ERRORS"=>#"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"
    }
    

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22. # config.ru
    require 'rack'
    class MyApp
    def call(env)
    [200, { 'Content-Type' => 'text/html' }, ["Hello World"]]
    end
    end
    run MyApp.new
    

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

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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
    

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25. BUILD YOUR OWN ROUTER
    

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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
    

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27. BUILD YOUR OWN
    CONTROLLERS
    

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28. class RoomsController < BaseController
    def create
    room = Room.new(name: params['name'], public: true)
    room.save!
    redirect_to ‘/'
    end
    end
    

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29. HOW TO LOAD
    CONTROLLERS?
    

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30. HOW TO LOAD RAILS
    CONTROLLERS?
    Rails magic autoloading
    

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31. require ‘users_controller’
    

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32. $LOAD_PATH
    

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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"
    ]
    

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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'
    

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

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37. method_missing?
    

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38. const_missing?
    

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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
    

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40. Learn how redirects work (30× status)
    

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

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42. Learn how cookies work
    

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

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44. class UsersController < ApplicationController
    def index
    unless request.cookies[:favorite_color] == :black
    response.headers.push('Set-Cookie', 'favorite_color=black')
    end
    end
    end
    

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45. Build your own small ORM
    

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46. 03
    BENEFITS
    

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47. REINVENTING THE WHEEL
    

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

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

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