UnderCover/flaskr/templates/_formhelpers.jinja2

{% macro render_field(field, extra="") %}
  <dt>{{ field.label }}</dt>

  <dd {{extra}}>
    {{ field(**kwargs)|safe }}

    {% if field.errors %}
      <ul class=errors>
        {% for error in field.errors %}
          <li>{{ error }}</li>
        {% endfor %}
      </ul>
    {% endif %}
  </dd>
{% endmacro %}