Ruby on Ales 2012 - Made in Japan

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Made In Japan Akira Matsuda

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rails new % rails new ruby_on_ales % git init, add, commit

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whoami ★name: Akira Matsuda ★twitter: @a_matsuda ★github: amatsuda

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I do ★Ruby ★Rails

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Japan

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Ruby

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DEMO

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before do ★ Gemfile gem 'rspec-rails' gem 'capybara-webkit' ★ % rails g rspec:install

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begin

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action_args https://github.com/asakusarb/action_args

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No content

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Installation ★ Gemfile gem 'action_args' ★ % bundle

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generate scaffold % rails g scaﬀold ale name price:integer % rake db:migrate

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It works! % rails s

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It’s green! % rails g rspec:install % rake spec

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interactive_rspec https://github.com/amatsuda/ interactive_rspec

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Installation ★ Gemfile gem 'interactive_rspec' ★ % bundle

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Usage % rails c > irspec > (1+1).should eq(2)

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spec a = AlesController.new a.index a.instance_variable_get('@ales').should eq(Ale.all)

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runnig request specs % rake spec:requets

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a request spec ★ spec/requests/ales_spec.rb feature "Ales" do scenario 'creating an ale' do visit '/ales/new' ll_in 'ale_name', :with => 'ruby' ll_in 'ale_price', :with => '1' click_button 'Create Ale' page.should have_content('ruby') end end

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hocus_pocus https://github.com/amatsuda/hocus_pocus

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Installation ★ Gemfile gem 'hocus_pocus' ★ % bundle

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generating request specs

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Adding a label image

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Using good ol’ helpers ★ app/helpers/ales_helper.rb def lagel_image(ale) image_tag("#{ale.name}.png") end ★ app/views/ales/index.html.erb <%= label_image(ale) %>

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active_decorator https://github.com/amatsuda/ active_decorator

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Installation ★ Gemfile gem 'active_decorator' ★ % bundle

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generating a decorator % rails g decorator ale

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Decorate! ★ app/decorators/ale_decorator.rb def label_image image_tag "#{name}.png" end ★ app/views/ales/index.html.erb <%= ale.label_image %>

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Validating models ★ app/models/ale.rb validates_presence_of :name

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HTML5 has client-side validation ★ app/views/ales/_form.html.erb <%= f.text_ eld :name, required: 'required' %>

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Not DRY ★ app/models/ale.rb validates_presence_of :name ★ app/views/ales/_form.html.erb <%= f.text_ eld :name, required: 'required' %>

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html5_validators https://github.com/amatsuda/ html5_validators

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Installation ★ Gemfile gem 'html5_validators' ★ % bundle

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I18n

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i18n_generators https://github.com/amatsuda/ i18n_generators

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Installation ★ Gemfile gem 'i18n_generators' ★ % bundle

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generate i18n % rails g i18n ja

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generate i18n (more) % rails g i18n fr % rails g i18n pt-br

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Pagination

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Kaminari https://github.com/amatsuda/kaminari http://railscasts.com/episodes/254- pagination-with-kaminari

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Installation ★ Gemfile gem 'kaminari' ★ % bundle

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Paginate! ★ app/controllers/ales_controller.rb def index(page) @ales = Ale.page(page) end