cablegates/pandora/place/models.py

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# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division, with_statement
from django.db import models
from django.db.models import Q
from django.conf import settings
from ox.django import fields
import managers
class Place(models.Model):
'''
Places are named locations, they should have geographical information attached to them.
'''
name = models.CharField(max_length=200, unique=True)
name_sort = models.CharField(max_length=200)
name_find = models.TextField(default='', editable=False)
geoname = models.CharField(max_length=1024, unique=True)
geoname_reverse = models.CharField(max_length=1024, unique=True)
wikipediaId = models.CharField(max_length=1000, blank=True)
aliases = fields.TupleField(default=[])
sw_lat = models.FloatField(default=0)
sw_lng = models.FloatField(default=0)
ne_lat = models.FloatField(default=0)
ne_lng = models.FloatField(default=0)
center_lat = models.FloatField(default=0)
center_lng = models.FloatField(default=0)
area = models.FloatField(default=-1)
objects = managers.PlaceManager()
class Meta:
ordering = ('name_sort', )
def __unicode__(self):
return self.name
def json(self):
j = {}
for key in ('name', 'name_sort', 'aliases', 'geoname', 'geoname_reversed',
'sw_lat', 'sw_lng', 'ne_lat', 'ne_lng',
'center_lat', 'center_lng'):
j[key] = getattr(self, key)
def save(self, *args, **kwargs):
if not self.name_sort:
self.name_sort = self.name
self.geoname_reverse = ', '.join(reversed(self.geoname.split(', ')))
self.name_find = '|%s|'%'|'.join([self.name] + self.aliases)
#update center
self.lat_center = ox.location.center(self.lat_sw, self.lat_ne)
self.lng_center = ox.location.center(self.lng_sw, self.lng_ne)
#update area
self.area = location.area(self.lat_sw, self.lng_sw, self.lat_ne, self.lng_ne)
super(Place, self).save(*args, **kwargs)