from django.contrib.gis.db import models

class SouthTexasCity(models.Model):

    "City model on projected coordinate system for South Texas."

    name = models.CharField(max_length=30)

    point = models.PointField(srid=32140)

    objects = models.GeoManager()

    def __unicode__(self): return self.name

class SouthTexasCityFt(models.Model):

    "Same City model as above, but U.S. survey feet are the units."

    name = models.CharField(max_length=30)

    point = models.PointField(srid=2278)

    objects = models.GeoManager()

    def __unicode__(self): return self.name

class AustraliaCity(models.Model):

    "City model for Australia, using WGS84."

    name = models.CharField(max_length=30)

    point = models.PointField()

    objects = models.GeoManager()

    def __unicode__(self): return self.name

class CensusZipcode(models.Model):

    "Model for a few South Texas ZIP codes (in original Census NAD83)."

    name = models.CharField(max_length=5)

    poly = models.PolygonField(srid=4269)

    objects = models.GeoManager()

    def __unicode__(self): return self.name

class SouthTexasZipcode(models.Model):

    "Model for a few South Texas ZIP codes."

    name = models.CharField(max_length=5)

    poly = models.PolygonField(srid=32140, null=True)

    objects = models.GeoManager()

    def __unicode__(self): return self.name

class Interstate(models.Model):

    "Geodetic model for U.S. Interstates."

    name = models.CharField(max_length=10)

    path = models.LineStringField()

    objects = models.GeoManager()

    def __unicode__(self): return self.name

class SouthTexasInterstate(models.Model):

    "Projected model for South Texas Interstates."

    name = models.CharField(max_length=10)

    path = models.LineStringField(srid=32140)

    objects = models.GeoManager()

    def __unicode__(self): return self.name