Haml ラジオボタン

= form_for @image do |f|
    -# = f.select :feature_type, [['Image', 'LABEL_DETECTION'],['Text','TEXT_DETECTION']]
    %span Image
    = f.radio_button :feature_type, "LABEL_DETECTION"
    %span Text
    = f.radio_button :feature_type, "TEXT_DETECTION"