def index(self):
template_values = {}
trails_js = []
trailsQuery = Session.query(TrailDesc).all()
for row in trailsQuery:
trail_js = {"id": row.id, "searchVal": row.osm_search}
trails_js.append(trail_js)
template_values["trails_js"] = json.dumps(trails_js)
return render("/map.html", template_values)
def index(self):
template_values = {}
trails_js = []
trailsQuery = Session.query(TrailDesc).all()
for row in trailsQuery:
trail_js = {
"id": row.id,
"searchVal": row.osm_search
}
trails_js.append(trail_js)
template_values["trails_js"] = json.dumps(trails_js)
return render("/map.html", template_values)
def index(self):
if "lat" in request.params:
lat = float( request.params["lat"] )
else:
return { "error": True, "message": "No \"lat\" parameter was found." }
if "lon" in request.params:
lon = float( request.params["lon"] )
else:
return { "error": True, "message": "No \"lon\" parameter was found." }
if "zoom" in request.params:
zoom = int( request.params["zoom"] )
else:
return { "error": True, "message": "No \"zoom\" parameter was found." }
is_mobile = False
if "mobile" in request.params:
if request.params["mobile"] == "true":
is_mobile = True
point = Point(lon, lat)
wkb_point = WKBSpatialElement( buffer( point.wkb ), 4326 )
meters_to_search = 1.8
if is_mobile:
meters_to_search = 2.1
distance_meters = pow( meters_to_search, ( 20 - zoom ) )
tolerance = metersToDegrees( distance_meters, lat )
features = []
#
# Query points first
#
#
# These layers aren't visible until we hit zoom 9
#
if zoom >= 9:
#
# Light Rail Stop query
#
lightRailFilter = func.ST_DWithin( wkb_point, LightRail.geometry_column(), tolerance )
lightRailQuery = Session.query( LightRail ).filter( lightRailFilter )
for row in lightRailQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Light Rail Stop"
features.append( feature )
if len( features ) > 0:
return FeatureCollection(features)
if zoom >= 16:
#
# These layers aren't visible until we hit zoom 16
#
#
# Bar/Pub query
#
barPubFilter = func.ST_DWithin( wkb_point, BarPub.geometry_column(), tolerance )
barPubQuery = Session.query( BarPub ).filter ( barPubFilter )
for row in barPubQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Bar/Pub"
features.append( feature )
if len( features ) > 0:
return FeatureCollection( features )
#
# Cafe query
#
cafeFilter = func.ST_DWithin( wkb_point, Cafe.geometry_column(), tolerance )
cafeQuery = Session.query( Cafe ).filter ( cafeFilter )
for row in cafeQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Cafe"
features.append( feature )
if len( features ) > 0:
return FeatureCollection( features )
#
# Restaurant query
#
restaurantFilter = func.ST_DWithin( wkb_point, Restaurant.geometry_column(), tolerance )
restaurantQuery = Session.query( Restaurant ).filter ( restaurantFilter )
for row in restaurantQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Restaurant"
features.append( feature )
if len( features ) > 0:
return FeatureCollection( features )
#
# Bicycle Rental query
#
bicycleRentalFilter = func.ST_DWithin( wkb_point, BicycleRental.geometry_column(), tolerance )
bicycleRentalQuery = Session.query( BicycleRental ).filter ( bicycleRentalFilter )
for row in bicycleRentalQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Bicycle Rental"
features.append( feature )
if len( features ) > 0:
return FeatureCollection( features )
#
# If no points, query lines
#
#
# Light Rail Line query
#
lightRailLineFilter = func.ST_DWithin( wkb_point, LightRailLine.geometry_column(), tolerance )
lightRailLineQuery = Session.query( LightRailLine ).filter( lightRailLineFilter )
for row in lightRailLineQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Light Rail Line"
features.append( feature )
if len( features ) > 0:
return FeatureCollection( features )
#
# Free Bus query
#
freeBusFilter = func.ST_DWithin( wkb_point, FreeBus.geometry_column(), tolerance )
freeBusQuery = Session.query( FreeBus ).filter( freeBusFilter )
for row in freeBusQuery:
feature = row.toFeature()
feature.properties["feature_type"] = "Free Bus"
features.append( feature )
if len( features ) > 0:
return FeatureCollection( features )
return FeatureCollection( features )