def copy_layer(obj):
lyr = Layer(obj.name)
if hasattr(lyr, 'title'):
lyr.title = obj.title
if hasattr(lyr, 'abstract'):
lyr.abstract = obj.abstract
# only if mapnik version supports it
# http://trac.mapnik.org/ticket/503
if hasattr(lyr, 'tolerance'):
lyr.tolerance = obj.tolerance
lyr.toleranceunits = obj.toleranceunits
lyr.srs = obj.srs
lyr.minzoom = obj.minzoom
lyr.maxzoom = obj.maxzoom
lyr.active = obj.active
lyr.queryable = obj.queryable
lyr.clear_label_cache = obj.clear_label_cache
lyr.datasource = obj.datasource
if hasattr(obj, 'wmsdefaultstyle'):
lyr.wmsdefaultstyle = obj.wmsdefaultstyle
if hasattr(obj, 'wmsextrastyles'):
lyr.wmsextrastyles = obj.wmsextrastyles
if hasattr(obj, 'meta_style'):
lyr.meta_style = obj.meta_style
if hasattr(lyr, 'wms_srs'):
lyr.wms_srs = obj.wms_srs
return lyr
def copy_layer(obj):
lyr = Layer(obj.name)
lyr.abstract = obj.abstract
lyr.active = obj.active
lyr.clear_label_cache = obj.clear_label_cache
lyr.datasource = obj.datasource
#lyr.maxzoom = obj.maxzoom
#lyr.minzoom = obj.minzoom
lyr.queryable = obj.queryable
lyr.srs = obj.srs
lyr.title = obj.title
if hasattr(obj,'wmsdefaultstyle'):
lyr.wmsdefaultstyle = obj.wmsdefaultstyle
if hasattr(obj,'wmsextrastyles'):
lyr.wmsextrastyles = obj.wmsextrastyles
return lyr
def process_trip(self, request, reqparams):
"""Process Trip request."""
if not 'trip_id' in reqparams:
return
trip_id = reqparams['trip_id']
trip = get_object_or_404(Trip, pk=trip_id, offer__id__isnull=False)
new_style_name = "trip_style"
if new_style_name not in self.mapfactory.styles:
new_style = Style()
new_rule = Rule()
new_rule.symbols.append(PointSymbolizer())
new_rule.symbols.append(LineSymbolizer(
Color('#2a4776'), 2)
)
new_style.rules.append(new_rule)
self.mapfactory.register_style(new_style_name, new_style)
styles = {new_style_name: new_style_name}
new_layer_name = "trip_%s" % trip_id
str_new_layer_name = "%s_aggragatestyle" % new_layer_name
if new_layer_name not in self.mapfactory.layers:
new_layer = Layer(new_layer_name)
new_layer.queryable = True
new_layer.datasource = PostGIS(
host=settings.DATABASE_HOST,
user=settings.DATABASE_USER,
password=settings.DATABASE_PASSWORD,
port=settings.DATABASE_PORT,
dbname=settings.DATABASE_NAME,
table="(SELECT route FROM carpool_tripoffer o LEFT JOIN carpool_trip t ON t.offer_id=o.id WHERE t.id=%s) geom" % trip.offer_id
)
new_layer.srs = '+init=epsg:4326'
new_layer.styles.append(str_new_layer_name)
self.mapfactory.register_aggregate_style(str_new_layer_name, styles)
self.mapfactory.register_layer(new_layer, str_new_layer_name)
