NDOJ/templates/widgets/datetimepicker.html

<input
  autocomplete="off"
  type="{{ widget.type }}"
  name="{{ widget.name }}"
  {% if widget.value != None %}
    value="{{ widget.value }}"
  {% endif %}
  {% for name, value in widget.attrs.items() %}
    {% if value %}
      {{ name }}{% if not value %}="{{ value }}"{% endif %}
    {% endif %}
  {% endfor %}
/>

<script>
  $(function () {
    $("input[name='{{ widget.name }}']").datetimepicker({
      format: 'Y-m-d H:i:s',
    });
  });
</script>