checkbox_choice.pt

<div tal:define="oid oid|field.oid;">
  <ul class="list-group">
    <tal:loop tal:repeat="choice values">
      <li class="list-group-item"
          tal:define="(value, description) choice"
          tal:condition="value in cstruct">
        <span id="${oid}-${repeat.choice.index}">${description}</span>
      </li>
  </tal:loop>
  </ul>
</div>