BooleanDropdownFilter

admin.py

# stdlib

# lib
from django.contrib.admin.filters import (
    BooleanFieldListFilter,
)

# app
class BooleanDropdownFilter(BooleanFieldListFilter):
    template = 'boolean_dropdown_filter.html'

boolean_dropdown_filter.html

{% load i18n %}
<script type="text/javascript">var go_from_select = function(opt) { window.location = window.location.pathname + opt };</script>
<h3>{% blocktrans with title as filter_title %} By {{ filter_title }} {% endblocktrans %}</h3>
<ul class="admin-filter-{{ title|cut:' ' }}">
    <li>
    <select class="form-control" style="width: 95%;margin-left: 2%;"
        onchange="go_from_select(this.options[this.selectedIndex].value)">
    {% for choice in choices %}
        <option{% if choice.selected %} selected="selected"{% endif %}
         value="{{ choice.query_string|iriencode }}">{{ choice.display }}</option>
    {% endfor %}
    </select>
    </li>
</ul>