mirror of
https://github.com/django/django.git
synced 2024-11-18 15:34:16 +00:00
106 lines
2.4 KiB
Python
106 lines
2.4 KiB
Python
from django.utils.encoding import python_2_unicode_compatible
|
|
|
|
from ..models import models
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class NamedModel(models.Model):
|
|
name = models.CharField(max_length=25)
|
|
|
|
objects = models.GeoManager()
|
|
|
|
class Meta:
|
|
abstract = True
|
|
required_db_features = ['gis_enabled']
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
class State(NamedModel):
|
|
pass
|
|
|
|
|
|
class County(NamedModel):
|
|
state = models.ForeignKey(State)
|
|
mpoly = models.MultiPolygonField(srid=4269) # Multipolygon in NAD83
|
|
|
|
|
|
class CountyFeat(NamedModel):
|
|
poly = models.PolygonField(srid=4269)
|
|
|
|
|
|
class City(NamedModel):
|
|
name_txt = models.TextField(default='')
|
|
name_short = models.CharField(max_length=5)
|
|
population = models.IntegerField()
|
|
density = models.DecimalField(max_digits=7, decimal_places=1)
|
|
dt = models.DateField()
|
|
point = models.PointField()
|
|
|
|
class Meta:
|
|
app_label = 'layermap'
|
|
required_db_features = ['gis_enabled']
|
|
|
|
|
|
class Interstate(NamedModel):
|
|
length = models.DecimalField(max_digits=6, decimal_places=2)
|
|
path = models.LineStringField()
|
|
|
|
class Meta:
|
|
app_label = 'layermap'
|
|
required_db_features = ['gis_enabled']
|
|
|
|
|
|
# Same as `City` above, but for testing model inheritance.
|
|
class CityBase(NamedModel):
|
|
population = models.IntegerField()
|
|
density = models.DecimalField(max_digits=7, decimal_places=1)
|
|
point = models.PointField()
|
|
|
|
|
|
class ICity1(CityBase):
|
|
dt = models.DateField()
|
|
|
|
class Meta(CityBase.Meta):
|
|
pass
|
|
|
|
|
|
class ICity2(ICity1):
|
|
dt_time = models.DateTimeField(auto_now=True)
|
|
|
|
class Meta(ICity1.Meta):
|
|
pass
|
|
|
|
|
|
class Invalid(models.Model):
|
|
point = models.PointField()
|
|
|
|
class Meta:
|
|
required_db_features = ['gis_enabled']
|
|
|
|
|
|
# Mapping dictionaries for the models above.
|
|
co_mapping = {
|
|
'name': 'Name',
|
|
# ForeignKey's use another mapping dictionary for the _related_ Model (State in this case).
|
|
'state': {'name': 'State'},
|
|
'mpoly': 'MULTIPOLYGON', # Will convert POLYGON features into MULTIPOLYGONS.
|
|
}
|
|
|
|
cofeat_mapping = {'name': 'Name',
|
|
'poly': 'POLYGON',
|
|
}
|
|
|
|
city_mapping = {'name': 'Name',
|
|
'population': 'Population',
|
|
'density': 'Density',
|
|
'dt': 'Created',
|
|
'point': 'POINT',
|
|
}
|
|
|
|
inter_mapping = {'name': 'Name',
|
|
'length': 'Length',
|
|
'path': 'LINESTRING',
|
|
}
|