                 back = null
             else
                 if @collection.chosen_service
-                    parent_service_url = @collection.chosen_service.attributes.parent
                     heading = @collection.chosen_service.attributes.name.fi
-                    if parent_service_url
-                        back = parent_service_url.replace('/v1/service/', '').replace('/', '')
-                    else
-                        back = 'root'
+                    back = @collection.chosen_service.attributes.parent or 'root'
                 else
                     back = null
             s = _.template container_template,

            for unit in unit_list
                color = ptype_to_color[unit.provider_type]
                icon = null
                for srv_url in unit.services
                    arr = srv_url.split '/'
                    id = parseInt arr[arr.length-2], 10
                    srv = tree_by_id[id]
                    if not srv?
                        continue

                # clear_markers()
                # if division_layer
                #     map.removeLayer division_layer
                self.draw_units data.results
        draw_units: (unit_list) ->
            # todo: refactor into a model/collection
            # 100 = ei tiedossa, 101 = kunnallinen, 102 = kunnan tukema, 103 = kuntayhtymä,
