       constructor: ->
         @characters = characters
         @construct_list()
-        @nodes_by_id = nodes_by_id
         @updated_at = characters_updated_at
         setInterval( =>
           @update_from_server()

          url: "/nodes"
          dataType: "json"
          success: (data) =>
            @update(data.characters, data.nodes_by_id, data.characters_updated_at)
      update: (characters, nodes_by_id, characters_updated_at)->
        console.log('updated : ', @characters, characters)
        @characters = characters
        if characters_updated_at != @updated_at

        @update_nodes()
        @destroy_node_obj()
        @create_node_obj()
        console.log("character #{ch.id} updated")
      update_nodes: ->
        @nodes = []
        for node_id in @character.node_ids
