def geo_point(self):
'''
@return: the obituarys geo_point
@rtype: dict
'''
lat, lon = geohash.decode(self.ghash)
return {
'lat': lat,
'lon': lon
}
def view_geohash(self,geo_hash): ent = classes.GHash.get_or_insert(geo_hash) db_roads = classes.Road.query(ancestor=ent.key).fetch(None) roads = self.package_to_visualizer(db_roads) db_natures = classes.Nature.query(ancestor=ent.key).fetch(None) natures = self.package_to_visualizer(db_natures) db_leisures = classes.Leisure.query(ancestor=ent.key).fetch(None) leisures = self.package_to_visualizer(db_leisures) db_buildingfootprints = classes.BuildingFootprint.query(ancestor=ent.key).fetch(None) buildingfootprints = self.package_to_visualizer(db_buildingfootprints) center = geohash.decode(ent.name) self.visualize(center,roads=roads,natures=natures,leisures=leisures,buildingfootprints=buildingfootprints)
def to_dict(self):
'''
Reverse engineers the city's key to model the form that the server
receives a city from google maps
'''
flat_key = self.key.flat()
country = flat_key[1]
admin1 = flat_key[3]
locality = flat_key[5]
city_string = '{}, {}'.format(locality,admin1) if admin1 != ' ' else locality
lat,lon = geohash.decode(self.ghash)
return {
'city_string' : city_string,
'country' : country,
'administrative_area_level_1' : admin1,
'locality' : locality,
'lat' : lat,
'lon' : lon
}
def to_dict(self):
'''
Reverse engineers the city's key to model the form that the server
receives a city from google maps
'''
flat_key = self.key.flat()
country = flat_key[1]
admin1 = flat_key[3]
locality = flat_key[5]
city_string = '{}, {}'.format(locality,
admin1) if admin1 != ' ' else locality
lat, lon = geohash.decode(self.ghash)
return {
'city_string': city_string,
'country': country,
'administrative_area_level_1': admin1,
'locality': locality,
'lat': lat,
'lon': lon
}
def fetch_radial_cities(self,ghash,precision=3,n=2):
'''
Fetches cities around the specified ghash
Sorts the cities by distance from the center ghash
@param ghash: the ghash of the center point
@type ghash: str
'''
# calc the center geo_point
center_geo_point = geohash.decode(ghash)
# create a list of ghashes around the
ghash = utils.chop_ghash(ghash, precision)
ghash_list = utils.create_ghash_list(ghash, n)
# get a list of all the city keys in the range of ghashes
city_keys_set = set([])
for ghash in ghash_list:
city_keys = models.City.query(
models.City.ghash >= ghash,
models.City.ghash <= ghash+"{"
).iter(
batch_size = 50,
keys_only = True)
city_keys_set.update(city_keys)
city_futures = ndb.get_multi_async(city_keys_set)
cities = (c.get_result() for c in city_futures)
cities_list = []
# calculate the distance from the center ghash
for city in cities:
# package the city for the radius list
city_dict = city.package_for_radius_list()
# calc distance from center point
distance = utils.distance_between_points(center_geo_point, city.geo_point)
# add the distance
city_dict['distance'] = distance
cities_list.append(city_dict)
# sort the list of cities by distance
cities_list = sorted(cities_list,key=lambda c: c['distance'])
return cities_list[:10]
def view_geohash(self, geo_hash):
ent = classes.GHash.get_or_insert(geo_hash)
db_roads = classes.Road.query(ancestor=ent.key).fetch(None)
roads = self.package_to_visualizer(db_roads)
db_natures = classes.Nature.query(ancestor=ent.key).fetch(None)
natures = self.package_to_visualizer(db_natures)
db_leisures = classes.Leisure.query(ancestor=ent.key).fetch(None)
leisures = self.package_to_visualizer(db_leisures)
db_buildingfootprints = classes.BuildingFootprint.query(
ancestor=ent.key).fetch(None)
buildingfootprints = self.package_to_visualizer(db_buildingfootprints)
center = geohash.decode(ent.name)
self.visualize(center,
roads=roads,
natures=natures,
leisures=leisures,
buildingfootprints=buildingfootprints)
def city_dict(self):
'''
Creates a dict form of the artists city for manage page, etc...
@warning: This method assumes that each artist has a max of one city
@return: All the fields that the manage page posts when the server receives a manage post
@rtype: dict
'''
try:
city = self.cities[0]
except IndexError:
# the artist does not have any cities
# return an empty dict
return {}
else:
# get the full city path
city_key = city.city_key
# flatten the key to get the whole path
flat_key = city_key.flat()
country = flat_key[1].title()
admin1 = flat_key[3].title()
locality = flat_key[5].title()
# get the lat,lon from the ghash
lat, lon = geohash.decode(city.ghash)
# create a string version for display purposes
city_string = '{}, {}'.format(
locality, admin1) if admin1 != ' ' else locality
city_dict = {
'country': country,
'administrative_area_level_1': admin1,
'locality': locality,
'lat': lat,
'lon': lon,
'city_string': city_string
}
return city_dict
def city_dict(self):
'''
Creates a dict form of the artists city for manage page, etc...
@warning: This method assumes that each artist has a max of one city
@return: All the fields that the manage page posts when the server receives a manage post
@rtype: dict
'''
try:
city = self.cities[0]
except IndexError:
# the artist does not have any cities
# return an empty dict
return {}
else:
# get the full city path
city_key = city.city_key
# flatten the key to get the whole path
flat_key = city_key.flat()
country = flat_key[1].title()
admin1 = flat_key[3].title()
locality = flat_key[5].title()
# get the lat,lon from the ghash
lat,lon = geohash.decode(city.ghash)
# create a string version for display purposes
city_string = '{}, {}'.format(locality,admin1) if admin1 != ' ' else locality
city_dict = {
'country' : country,
'administrative_area_level_1' : admin1,
'locality' : locality,
'lat' : lat,
'lon' : lon,
'city_string' : city_string
}
return city_dict
def geo_point(self): return geohash.decode(self.ghash)
def geo_point(self):
return geohash.decode(self.ghash)
