SimpleForm inline collection radio_buttons/checkboxes for Twitter Bootstrap 3

collection_check_boxes_input.rb

#app/inputs/collection_check_boxes_input.rb
class CollectionCheckBoxesInput < SimpleForm::Inputs::CollectionCheckBoxesInput
  def item_wrapper_class
    "checkbox-inline"
  end
end

_form.html.haml

#radio buttons in horizontal form version with label in a length=2 column and inputs in a length=10 column
= f.input :field_name, label_html: {class: "col-lg-2 col-md-2"} do
  .col-lg-10.col-md-10
    = f.input_field :field_name, collection: @my_collection, as: :radio_buttons

collection_radio_buttons_input.rb

#app/inputs/collection_radio_buttons_input.rb
class CollectionRadioButtonsInput < SimpleForm::Inputs::CollectionRadioButtonsInput
  def item_wrapper_class
    "radio-inline"
  end
end