<% question.input_options.each do | option | option_id = "#{option.parameterize}_#{question.to_i}" radio_html = {class: 'radio', id: option_id} %>

<%= radio_button_tag('answer[radio]', option, (question.answer == option), radio_html) %> <%= label_tag(option_id, option) %>

<% end %> <%= render partial: "quiz/answer_errors", locals: {question: question, answer: @answer} %>