def convert(self, value):
if value is None:
return None
point = point_from_lat_long(value)
return (point.y, point.x)
def convert(self, value):
if value is None:
return None
point = point_from_lat_long(value)
return (point.y, point.x)
def prepare(self, obj):
value = SearchField.prepare(self, obj)
if value is None:
return None
point = point_from_lat_long(value)
return "%s,%s" % (point.y, point.x)
def prepare(self, obj):
value = SearchField.prepare(self, obj)
if value is None:
return None
point = point_from_lat_long(value)
return '%s,%s' % (point.y, point.x)
def setUp(self):
# Ensure we have results.
total = SearchQuerySet().count()
self.assertTrue(total)
# Get some real coords from the index
point = point_from_long_lat((151.9491543, -27.4581498))
distance = Distance(km=100000000)
result = (SearchQuerySet().dwithin('geoposition', point,
distance).distance(
'geoposition',
point).order_by('distance'))[0]
self.point = point_from_lat_long(result.geoposition)
def setUp(self):
# Ensure we have results.
total = SearchQuerySet().count()
self.assertTrue(total)
# Get some real coords from the index
point = point_from_long_lat((151.9491543, -27.4581498))
distance = Distance(km=100000000)
result = (
SearchQuerySet()
.dwithin('geoposition', point, distance)
.distance('geoposition', point)
.order_by('distance')
)[0]
self.point = point_from_lat_long(result.geoposition)
def radius_filter(self, min_km=None, max_km=None, order_by=None, **geo_lookup):
"""
Perform a radius filter from the specified coordinates (lat, long)
or a Point instance.
If "order_by" is provided, an extra field is created on each result
with that name, containing the distance from the coordinates. Results
are then ordered by the distance. Suggested values to use are
'-distance' (closest first) or 'distance' (farthest first).
For example, to search for results within 0 and 5km from the
coordinates, with the closest results first, you could do:
SearchQuerySet().radius(0, 5, geoposition=(lng, lat), order_by='distance')
"""
assert len(geo_lookup) == 1, 'You must supply field_name=coordinates'
# Ensure the coords are in the right order and recreate the lookup.
# Always provide coordinates in lat,lng and not the other way around!
field_name, coordinates = geo_lookup.items()[0]
point = point_from_lat_long(coordinates)
geo_lookup = {
field_name: point.get_coords()
}
queryset = self
if min_km:
queryset = queryset.dminimum(field_name, point, Distance(km=min_km))
if max_km:
queryset = queryset.dwithin(field_name, point, Distance(km=max_km))
if order_by:
# Add a distance field to each result.
assert order_by in ('distance', '-distance')
queryset = queryset.distance(field_name, point)
# Sort by that field.
queryset = queryset.order_by(order_by)
return queryset
