nk20/templates/member/autocomplete_model.html

<input type="hidden" name="{{ widget.name }}" {% if widget.attrs.model_pk %}value="{{ widget.attrs.model_pk }}"{% endif %} id="{{ widget.attrs.id }}_pk">
<input type="text"
   {% if widget.value != None and widget.value != "" %}value="{{ widget.value }}"{% endif %}
   name="{{ widget.name }}_name" autocomplete="off"
    {% for name, value in widget.attrs.items %}
        {% ifnotequal value False %}{{ name }}{% ifnotequal value True %}="{{ value|stringformat:'s' }}"{% endifnotequal %}{% endifnotequal %}
    {% endfor %}>
<ul class="list-group list-group-flush" id="{{ widget.attrs.id }}_list">
</ul>