<!-- local variables: aria_label, placement, title -->
<button
    type="button"
    class="btn btn-link"
    aria-label="<%= aria_label.present? ? aria_label.to_s : _('Provide the label to any assistive technology') %>"
    data-toggle="tooltip"
    data-placement="<%= ['top', 'right', 'bottom', 'left'].include?(placement) ? placement : 'top' %>"
    title="<%= title.present? ? title.to_s : _('Tooltip title') %>">
        <i class="fa fa-question-circle" aria-hidden="true"></i>
</button>