from django.contrib.gis.db import models from django.utils.encoding import python_2_unicode_compatible @python_2_unicode_compatible class NamedModel(models.Model): name = models.CharField(max_length=30) objects = models.GeoManager() class Meta: abstract = True app_label = 'geogapp' def __str__(self): return self.name class City(NamedModel): point = models.PointField(geography=True) class Zipcode(NamedModel): code = models.CharField(max_length=10) poly = models.PolygonField(geography=True) class County(NamedModel): state = models.CharField(max_length=20) mpoly = models.MultiPolygonField(geography=True) def __str__(self): return ' County, '.join([self.name, self.state])