rhodecode/templates/forms/checkbox_choice.pt

<div tal:define="css_class css_class|field.widget.css_class;
                 style style|field.widget.style;
                 oid oid|field.oid;
                 inline getattr(field.widget, 'inline', False)"
     tal:omit-tag="not inline">
  ${field.start_sequence()}
  <div tal:repeat="choice values | field.widget.values"
       tal:omit-tag="inline"
       class="checkbox">
    <div tal:define="(value, title) choice">
      <input tal:attributes="checked value in cstruct;
                             class css_class;
                             style style"
             type="checkbox"
             name="checkbox"
             value="${value}"
             id="${oid}-${repeat.choice.index}"/>
      <label for="${oid}-${repeat.choice.index}"
             tal:attributes="class inline and 'checkbox-inline'">
        ${title}
      </label>
    </div>
  </div>
  ${field.end_sequence()}
</div>