django-jet/jet/templates/admin/filter.html

{% load i18n %}

<select class="changelist-filter-select">
    {% for choice in choices %}
        {% if forloop.first %}
            <option data-url="{{ choice.query_string|iriencode }}">{% blocktrans with filter_title=title %}{{ filter_title }}{% endblocktrans %}</option>
            <option disabled>---</option>
        {% else %}
            <option{% if choice.selected %} selected{% endif %} data-url="{{ choice.query_string|iriencode }}">{{ choice.display }}</option>
        {% endif %}
    {% endfor %}
</select>