监听 mongoDB 中的更新操作并自动更新某些字段

Question

whenever any update operation occur on the collection, there should be an automated process in nodejs that will automatically update the timestamp for updateAt field.

I don't want to do manually as there are multiple sources from it can be updated.

MongoDB don't have any trigger, but there is a watch in MongoDB how can I use it.... I want to perform update operations inside the watch and don't want to trigger watch when we update it.

Answer 1

You can use post update hooks described here But for this particular purpose, you can use { timestamps: true } in your mongoose schema and it will automatically update the createdAt and updatedAt fields

If you are not using mongoose take a look at this question .