MongoDB DBRef ON DELETE CASCADE [英] MongoDB DBRef ON DELETE CASCADE

问题描述

有没有办法在MongoDB中有一个具有ON DELETE CASCADE功能的外键？

我知道你可以使用DBRef作为一种外键但是当引用指向的集合中的项被移除时，引用返回null。但是我希望参考所属的项目被删除。

或者我需要每次删除的东西检查引用它？

解决方案

现在这个功能不存在。如果你想要的话。在MongoDB Bugtracker上添加它

http://jira.mongodb.org

Is there a way in MongoDB to have a foreign key with a 'ON DELETE CASCADE' functionality?

I know you can use DBRef as a sort of foreign key but when the item in a collection where the reference points to is removed, the reference returns null. But i want that the item where the reference belongs to gets removed. How do i do this?

Or do i need every time i remove things check references to it?

解决方案

This feature doesn't exist now. If you want it. Add it on MongoDB Bugtracker

http://jira.mongodb.org

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