{% for node,structure in request.user.profile.division.get_children|tree_info %}
    {% if node.is_child_node %}
        <option value="{{ node.pk }}">
            {{ structure.ancestors|tree_path }} -- {{ node }}
        </option>
    {% endif %}
{% endfor %}

category = mptt.forms.TreeNodeChoiceField(models.Category.objects)

class GasStationFilter(django_filters.FilterSet):
    subdivision = TreeNodeChoiceField(queryset=Division.objects.all())

    class Meta:
        model = GasStation
        fields = ['id', 'name', 'type', 'subdivision', 'status', 'ts']
        order_by_field = '-id'