Override django-filters Django models PointField

Question

I am trying to filter data using django-filters. I am using a PointField for location and I want to override this field from filters.py. How can I override the models PointField from filters.py?

import django_filters from .models import Apartment

class ApartmentFilter(django_filters.FilterSet):
    ADKT = 'Addis Ketema'
    AKLT = 'Akaki-Kality'
    ARDA = 'Arada'
    BOLE = 'Bole'
    GLLE = 'Gulele'
    KLFE = 'Kolfe-Keranio'
    KIRK = 'Kirkos'
    LDTA = 'Lideta'
    YEKA = 'Yeka'
    NFSL = 'Nefas Silk-Lafto'
    SUBCITY_CHOICES = [
        (ADKT, 'Addis Ketema'),
        (AKLT, 'Akaki-Kality'),
        (ARDA, 'Arada'),
        (BOLE, 'Bole'),
        (GLLE, 'Gulele'),
        (KLFE, 'Kolfe-Keranio'),
        (KIRK, 'Kirkos'),
        (LDTA, 'Lideta'),
        (NFSL, 'Nefas Silk-Lafto'),
        (YEKA, 'Yeka')]

    class Meta:
        model = Apartment
        fields = ['apt_subcity', 'apt_cost']
        filter_overrides = {
            models.PointField: {
                'filter_class': django_filters.CharField,
            }
        }