viewing ruby blossom kaigi2017

Slides from my talk about hanami at rubykaigi2017

Links:
railshurts.com/quiz
awesome-hanami.org
www.ossboard.org
octostar.herokuapp.com
contributors.hanamirb.org
hanamirb.org
gitter.im/hanami/chat
discuss.hanamirb.org

Transcript

1. ❤
   

   Hello ruby kaigi!
   

   ❤
   

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3. Japan is awesome
   

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4. What have I learned here?
   

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5. One ramen per day is normal
   

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8. Juice pack
   

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11. Tax free
    

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12. View Slide

13. Anton Davydov
    github.com/davydovanton

    twitter.com/anton_davydov
    davydovanton.com
    

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14. Stickers
    

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16. Hanami core
    

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17. ruby
    rom-rb
    dry-rb
    rails
    crystal
    etc
    

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18. moscow.rb
    

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20. Luca Guidi
    github.com/jodosha
    

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22. General Ideas
    

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23. Long-term maintenance
    

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24. Modularity
    Forget about fat models
    

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26. Simplicity and Lightweight
    Framework is just a tool
    

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27. Architecturally Sound
    Isolation everywhere
    

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28. Zero Monkey-Patching
    Don’t think about framework or language
    

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29. railshurts.com/quiz
    

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30. railshurts.com/quiz
    

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31. Threadsafe
    
    

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33. hanami != rails
    
    
    

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34. Typical parts
    of any web project
    

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35. Web Project
    Business

    logic
    Data
    flow
    

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36. Data flow
    

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37. Container Architecture
    Clean Architecture
    

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38. Project
    request
    

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39. App App App
    request
    

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40. App App App
    lib
    request
    

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41. App App App
    lib
    App App App
    lib
    App App App
    lib
    request
    

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42. App App App
    lib
    App App
    lib
    App App App
    lib
    request
    App
    

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43. apps/
    ├── admin
    │ ├── application.rb
    │ ├── assets
    │ │ └── ...
    │ ├── config
    │ │ └── ...
    │ ├── controllers
    │ │ └── ...
    │ ├── templates
    │ │ └── ...
    │ └── views
    │ └── ...
    └── web
    ├── ...
    

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44. Business Logic
    

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45. lib/
    ├── project_name
    │ ├── interactors
    │ │ └── create_user.rb
    │ ├── entities
    │ │ └── user.rb
    │ ├── mailers
    │ │ └── templates
    │ └── repositories
    │ └── user_repository.rb
    └── project_name.rb
    

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46. lib/
    ├── project_name
    │ ├── interactors
    │ │ └── create_user.rb
    │ ├── entities
    │ │ └── user.rb
    │ ├── mailers
    │ │ └── templates
    │ └── repositories
    │ └── user_repository.rb
    └── project_name.rb
    

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47. lib/
    ├── project_name
    │ ├── interactors
    │ │ └── create_user.rb
    │ ├── entities
    │ │ └── user.rb
    │ ├── mailers
    │ │ └── templates
    │ └── repositories
    │ └── user_repository.rb
    └── project_name.rb
    

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48. lib/
    ├── project_name
    │ ├── interactors
    │ │ └── create_user.rb
    │ ├── entities
    │ │ └── user.rb
    │ ├── mailers
    │ │ └── templates
    │ └── repositories
    │ └── user_repository.rb
    └── project_name.rb
    

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49. Gems
    

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50. hanami - Base repository, CLI
    router - Rack compatible HTTP router for Ruby
    controller - Full featured and fast actions for Rack
    utils - Ruby core extensions and class utilities
    model - Persistence with entities and repositories
    

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51. validations - Validations mixin for Ruby objects
    helpers - View helpers for Ruby applications
    view - Presentation with a separation
    assets - Assets management for Ruby
    mailer - Mail for Ruby applications
    

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52. Differences
    

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53. # rack
    class HelloApp
    def call(env)
    [200, { **env }, ['Hello!']]
    end
    end
    

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54. # hanami-router
    class HelloApp
    def call(env)
    [200, { **env }, ['Hello!']]
    end
    end
    router = Hanami::Router.new
    router.get '/', to: 'hello_app'
    

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55. # sinatra
    class Hello < Sinatra
    get '/' do
    'Hello!'
    end
    end
    

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56. # hanami
    Hanami::Router.new do
    get '/' do
    [200, { **env }, ['Hello!']]
    end
    end
    

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57. Rails and Hanami
    

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58. Controllers
    

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59. class UsersController < AC
    def new
    end
    def send_sms
    end

    private
    def user_params
    end
    end
    Controllers: Rails
    

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60. Controllers: hanami action
    module Web::Controllers::Board
    class Index
    include Web::Action
    params do
    required(:email).filled
    end
    def call(params)
    end
    end
    end
    

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61. Controllers: hanami
    module Web::Controllers::Board
    class Index
    include Web::Action
    params do
    required(:email).filled
    end
    def call(params)
    end
    end
    end
    

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62. Controllers: hanami
    module Web::Controllers::Board
    class Index
    include Web::Action
    params do
    required(:email).filled
    end
    def call(params)
    end
    end
    end
    

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63. Model
    

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64. class User < ActiveRecord::Base

    include Gravtastic
    before_destroy :yank_gems
    has_many :rubygems, through: :ownerships
    validates :name, presence: true
    # ...
    end
    Model: Rails
    

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65. class User < ActiveRecord::Base

    include Gravtastic
    before_destroy :yank_gems
    has_many :rubygems, through: :ownerships
    validates :name, presence: true
    # ...
    end
    Model: Rails
    

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66. class User < ActiveRecord::Base

    include Gravtastic
    before_destroy :yank_gems
    has_many :rubygems, through: :ownerships
    validates :name, presence: true
    # ...
    end
    Model: Rails
    

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67. class User < ActiveRecord::Base

    include Gravtastic
    before_destroy :yank_gems
    has_many :rubygems, through: :ownerships
    validates :name, presence: true
    # ...
    end
    Model: Rails
    

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68. class User < ActiveRecord::Base

    include Gravtastic
    before_destroy :yank_gems
    has_many :rubygems, through: :ownerships
    validates :name, presence: true
    # ...
    end
    Model: Rails
    

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69. Model: hanami
    hanami + ROM = ❤
    rom-rb.org
    

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70. Model: hanami entity
    class User < Hanami::Entity
    # ...
    end
    

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71. Model: hanami entity
    >> user = User.new(id: 1)
    => #1}>
    >> user.id
    => 1
    >> user.id = 1
    NoMethodError: undefined method `id=' for
    #1}>
    Did you mean? id
    

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72. Model: hanami entity
    >> user = User.new(id: 1)
    => #1}>
    >> user.id
    => 1
    >> user.id = 1
    NoMethodError: undefined method `id=' for
    #1}>
    Did you mean? id
    

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73. Model: hanami entity
    >> user = User.new(id: 1)
    => #1}>
    >> user.id
    => 1
    >> user.id = 1
    NoMethodError: undefined method `id=' for
    #1}>
    Did you mean? id
    

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74. class UserRepository < Hanami::Repository
    associations do
    has_many :books
    end
    def find_by_name(name)
    users # => ROM relation
    users.where(name: name).limit(1).order { id }.one
    end
    end
    Model: hanami repository
    

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75. >> repo = UserRepository.new
    => #
    >> repo.find(1)
    => #
    >> repo.find_by_name(‘Anton’)
    => #
    Model: hanami repository
    

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76. View
    

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77. View: Rails
    rails view (partials?)
    +
    rails helper
    

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78. View: Hanami
    hanami view (ruby class)
    +
    templates
    

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79. Assets
    

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80. Pros and Cons
    

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81. No magic
    

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82. module Web::Controllers::Board
    class Index
    include Web::Action
    def call(params)
    end
    end
    end
    

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83. Action test
    describe Web::Controllers::Board::Index do
    let(:action){ Board::Index.new }
    let(:params){ Hash[] }
    it 'is successful' do
    response = action.call(params)
    response[0].must_equal 200
    end
    end
    

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84. Action test
    describe Web::Controllers::Board::Index do
    let(:action){ Board::Index.new }
    let(:params){ Hash[] }
    it 'is successful' do
    response = action.call(params)
    response[0].must_equal 200
    end
    end
    

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85. Action test
    describe Web::Controllers::Board::Index do
    let(:action){ Board::Index.new }
    let(:params){ Hash[] }
    it 'is successful' do
    response = action.call(params)
    response[0].must_equal 200
    end
    end
    

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86. No monkey-patching
    

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87. Best practices
    

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88. Dependency Injection
    

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90. The logic separation
    

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91. Interactors out the box
    

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94. TDD
    

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97. TDD
    

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98. Good but not great
    documentation
    

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99. Missing Gems
    

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100. WebSockets

     Pagination

     WebPack
     GraphQL

     Devise
     2016
     

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101. WebSockets

     Pagination

     WebPack
     GraphQL

     Devise
     Now
     

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102. awesome-hanami.org
     

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103. Projects are good

     for new contributors
     

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104. www.ossboard.org
     

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105. octostar.herokuapp.com
     

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106. contributors.hanamirb.org
     

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107. Contacts
     hanamirb.org
     gitter.im/hanami/chat
     discuss.hanamirb.org
     

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108. github.com/davydovanton

     twitter.com/anton_davydov
     davydovanton.com
     Thank you ❤
     

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