gistfile1.rb

  = form_tag material_rating_path(@material) do
    .btn-group
      = button_tag class: "btn btn-rating", name: "rating", value: -2 do
        = image_tag "negative_two_rating.png"
        span.badge.badge-important --
      = button_tag class: "btn btn-rating", name: "rating", value: -1 do
        = image_tag "negative_one_rating.png"
        span.badge.badge-warning -
      = button_tag class: "btn btn-rating", name: "rating", value: 0 do
        = image_tag "zero_rating.png"
        span.badge
      = button_tag class: "btn btn-rating", name: "rating", value: 1 do
        = image_tag "positive_one_rating.png"
        span.badge.badge-info +
      = button_tag class: "btn btn-rating", name: "rating", value: 2 do
        = image_tag "positive_two_rating.png"
        span.badge.badge-success ++