osem-fcy/app/views/admin/questions/_form.html.haml

.row
  .col-md-6
    %legend Question
    = f.input :title, label: 'Your Question'
    = f.input :question_type
    = f.input :global, label: 'Make Global',
              hint: '(Global questions are available for selection to all conferences)'
  .col-md-6.hidden{id: 'answers_col'}
    = dynamic_association :answers, 'Answers', f,
                          hint: 'Insert your answers in the order you want them to appear'

:javascript
  $("#question_question_type_id").change(function () {

    var selected_type = $(this).find('option:selected').text();

    if (selected_type == 'Yes/No')
      $('#answers_col').addClass('hidden');
    else
      $('#answers_col').removeClass('hidden');
    end
  });