gistfile1.txt

class StringWithIconsInput < SimpleForm::Inputs::StringInput

  def input(wrapper_options)
    icons = options.fetch(:icons)
    template.content_tag(:div, class: 'left-inner-addon') do
      template.content_tag(:div, class: attribute_name.to_s.camelcase(:lower)) do
        [
        icons.map do |icon|
          template.content_tag(:i, nil,class: "glyphicon glyphicon-#{icon}")
        end,
        super
        ].flatten.join.html_safe
      end
    end.html_safe
  end
end