def add_location(request, loc_type, map_source ="google-maps", visibility = "private"):
location = Location(owner = users.get_current_user(),
map_source =map_source, loc_type = loc_type)
location.visibility = visibility
if loc_type == "extent":
location.name = request.get('loc-name')
location.latitude = float(request.get('latitude'))
location.longitude =float(request.get('longitude'))
location.zoom = int(request.get('zoom'))
elif loc_type == "point":
location.name = request.get('point-name')
location.latitude = float(request.get('latitude-point'))
location.longitude =float(request.get('longitude-point'))
location.zoom = int(request.get('zoom-point'))
tkn = location.buildToken()
location.token = tkn
location.put()
return location.toJSON()
