_form.html.slim

= simple_form_for(@article) do |f|
  = f.error_notification

  .form-inputs
    = f.input :title
    = f.input :body
    = f.input :published_at

  .form-actions
    = f.button :submit, class: 'btn btn-primary'

application.sass

@import "bootstrap"

body
  margin-top: 60px

textarea.form-control
  height: 250px

select.form-control
  width: 120px
  display: inline-block

edit.html.slim

h1 Editar artigo

== render 'form'

new.html.slim

h1 New article

== render 'form'