+ if node.visible
+ if WayNode.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_nodes.id", :conditions => [ "current_ways.visible = 1 AND current_way_nodes.node_id = ?", node.id ])
+ render :nothing => true, :status => :precondition_failed
+ elsif RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='node' and member_id=?", params[:id]])
+ render :nothing => true, :status => :precondition_failed
+ else
+ node.user_id = @user.id
+ node.visible = 0
+ node.save_with_history!