mirror of
https://github.com/django/django.git
synced 2024-12-23 09:36:06 +00:00
98 lines
2.1 KiB
Python
98 lines
2.1 KiB
Python
from django.contrib.gis.db import models
|
|
|
|
from ..utils import gisfield_may_be_null
|
|
|
|
|
|
class NamedModel(models.Model):
|
|
name = models.CharField(max_length=30)
|
|
|
|
class Meta:
|
|
abstract = True
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
class Country(NamedModel):
|
|
mpoly = models.MultiPolygonField() # SRID, by default, is 4326
|
|
|
|
|
|
class CountryWebMercator(NamedModel):
|
|
mpoly = models.MultiPolygonField(srid=3857)
|
|
|
|
|
|
class City(NamedModel):
|
|
point = models.PointField()
|
|
|
|
class Meta:
|
|
app_label = "geoapp"
|
|
|
|
|
|
# This is an inherited model from City
|
|
class PennsylvaniaCity(City):
|
|
county = models.CharField(max_length=30)
|
|
founded = models.DateTimeField(null=True)
|
|
|
|
class Meta:
|
|
app_label = "geoapp"
|
|
|
|
|
|
class State(NamedModel):
|
|
poly = models.PolygonField(
|
|
null=gisfield_may_be_null
|
|
) # Allowing NULL geometries here.
|
|
|
|
class Meta:
|
|
app_label = "geoapp"
|
|
|
|
|
|
class Track(NamedModel):
|
|
line = models.LineStringField()
|
|
|
|
|
|
class MultiFields(NamedModel):
|
|
city = models.ForeignKey(City, models.CASCADE)
|
|
point = models.PointField()
|
|
poly = models.PolygonField()
|
|
|
|
|
|
class UniqueTogetherModel(models.Model):
|
|
city = models.CharField(max_length=30)
|
|
point = models.PointField()
|
|
|
|
class Meta:
|
|
unique_together = ("city", "point")
|
|
required_db_features = ["supports_geometry_field_unique_index"]
|
|
|
|
|
|
class Truth(models.Model):
|
|
val = models.BooleanField(default=False)
|
|
|
|
|
|
class Feature(NamedModel):
|
|
geom = models.GeometryField()
|
|
|
|
|
|
class MinusOneSRID(models.Model):
|
|
geom = models.PointField(srid=-1) # Minus one SRID.
|
|
|
|
|
|
class NonConcreteField(models.IntegerField):
|
|
def db_type(self, connection):
|
|
return None
|
|
|
|
def get_attname_column(self):
|
|
attname, column = super().get_attname_column()
|
|
return attname, None
|
|
|
|
|
|
class NonConcreteModel(NamedModel):
|
|
non_concrete = NonConcreteField()
|
|
point = models.PointField(geography=True)
|
|
|
|
|
|
class ManyPointModel(NamedModel):
|
|
point1 = models.PointField()
|
|
point2 = models.PointField()
|
|
point3 = models.PointField(srid=3857)
|