15:11:14,676WARNFacesRequestAttributes:121-Couldnotregisterdestructioncallback[org.springframework.beans.factory.support.DisposableBeanAdapter@1059fd6]forattribute'purchaseController'becauseFacesRequestAttributesdoesnotsupportsuchcallbacks此警告消息出现在我的日志中很多。对于每个过期的托管bean。它会在给定时间后过期，因为我使用的是MyFacesOr

15:11:14,676WARNFacesRequestAttributes:121-Couldnotregisterdestructioncallback[org.springframework.beans.factory.support.DisposableBeanAdapter@1059fd6]forattribute'purchaseController'becauseFacesRequestAttributesdoesnotsupportsuchcallbacks此警告消息出现在我的日志中很多。对于每个过期的托管bean。它会在给定时间后过期，因为我使用的是MyFacesOr

这个before_save-callback有什么问题？classOrder:destroy,:inverse_of=>:orderaccepts_nested_attributes_for:line_itemsattr_accessible:line_items_attributesbefore_save:mark_line_items_for_removaldefmark_line_items_for_removalline_items.eachdo|line_item|line_item.mark_for_destructionifline_item.quantity.to_f当