def filter_geo(self, address_list, limit=10):
geobox = self.get_argument_geobox(default=None)
latlon = self.get_argument_latlon("latlon", None)
if geobox:
return Address.filter_geobox(address_list, geobox), geobox, latlon
# Find geobox around the center that includes at least 10 matches
if not latlon:
lookup = self.get_argument("lookup", None)
if lookup:
latlon = geo.geocode(lookup)
if not latlon:
self.messages.append(("WARNING", "Could not find address: '%s'." % lookup))
if not latlon:
return address_list.limit(limit), geobox, latlon
address_list_2 = Address.order_distance(address_list, latlon)
address_list_2 = address_list_2.limit(limit)
max_dist = Address.max_distance(
self.orm, address_list_2, latlon[0], latlon[1])
max_dist *= 1.1
scale = Address.scale(latlon[0])
values = (
latlon[0] - max_dist,
latlon[0] + max_dist,
max(latlon[1] - max_dist / max(scale, 0.01), -180),
min(latlon[1] + max_dist / max(scale, 0.01), 180),
)
geobox = dict(zip(["latmin", "latmax", "lonmin", "lonmax"], values))
return Address.filter_geobox(address_list, geobox), geobox, latlon
def geo_address_query(self):
query = self.orm.query(Address)
geobox = self.get_geobox()
return Address.filter_geobox(query, geobox)
