+ def update_from(new_way, user)
+ if !new_way.preconditions_ok?
+ raise OSM::APIPreconditionFailedError.new
+ elsif new_way.version != version
+ raise OSM::APIVersionMismatchError.new(new_way.version, version)
+ else
+ self.user_id = user.id
+ self.tags = new_way.tags
+ self.nds = new_way.nds
+ self.visible = true
+ save_with_history!
+ end