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53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
from django.contrib.gis.db import models
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from ..utils import gisfield_may_be_null
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class NamedModel(models.Model):
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name = models.CharField(max_length=30)
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class Meta:
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abstract = True
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def __str__(self):
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return self.name
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class SouthTexasCity(NamedModel):
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"City model on projected coordinate system for South Texas."
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point = models.PointField(srid=32140)
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radius = models.IntegerField(default=10000)
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class SouthTexasCityFt(NamedModel):
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"Same City model as above, but U.S. survey feet are the units."
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point = models.PointField(srid=2278)
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class AustraliaCity(NamedModel):
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"City model for Australia, using WGS84."
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point = models.PointField()
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radius = models.IntegerField(default=10000)
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allowed_distance = models.FloatField(default=0.5)
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ref_point = models.PointField(null=True)
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class CensusZipcode(NamedModel):
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"Model for a few South Texas ZIP codes (in original Census NAD83)."
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poly = models.PolygonField(srid=4269)
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class SouthTexasZipcode(NamedModel):
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"Model for a few South Texas ZIP codes."
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poly = models.PolygonField(srid=32140, null=gisfield_may_be_null)
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class Interstate(NamedModel):
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"Geodetic model for U.S. Interstates."
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path = models.LineStringField()
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class SouthTexasInterstate(NamedModel):
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"Projected model for South Texas Interstates."
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path = models.LineStringField(srid=32140)
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