Gemfile

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.0'

# Use sqlite3 as the database for Active Record
gem 'sqlite3'

# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.0'

# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'

# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
# gem 'jbuilder', '~> 1.2'

gem 'simple_form'
gem 'slim-rails'

gem 'xray-rails', group: :development

gem 'start'

index.html.slim

h1 Artigos

table.table.table-striped
  thead
    tr
      th Título
      th Publicado em
      th

  tbody
    - @articles.each do |article|
      tr
        td = article.title
        td = l article.published_at
        td
          .btn-group.pull-right
            = link_to 'Ver', article, class: 'btn btn-default btn-sm'
            = link_to 'Editar', edit_article_path(article), class: 'btn btn-default btn-sm'
            = link_to 'Excluir', article, :confirm => 'Tem certeza?', :method => :delete, class: 'btn btn-default btn-sm'

br

= link_to 'Criar Artigo', new_article_path, class: 'btn btn-primary'

simple_form.pt-br.yml

pt-BR:
  simple_form:
    yes: Sim
    no: Não
    required:
      text: obrigatório
      mark: "*"
      # You can uncomment the line below if you need to overwrite the whole required html.
      # When using html, text and mark won't be used.
      # html: "<abbr title="required">*</abbr>"
    error_notification:
      default_message: "Por favor, corrija os problemas abaixo:"
    # Labels and hints examples
    labels:
      defaults:
        password: Senha
        name: Nome
      article:
        title: Título
        body: Texto
        published_at: Publicado em
    # hints:
    #   defaults:
    #     password: 'Mínimo de 8 caracteres.'
    # placeholders:
    #   defaults:
    #     name: 'Nome'
    #     password: '****'
  helpers:
    submit:
      create: 'Criar'
      update: 'Editar'
      article:
        create: 'Criar artigo'
        update: 'Editar artigo'

terminal

bundle
rails g start:locales
rails s