node.js - How do I update a property with the current date in a Mongoose schema on every save?

Question

In my database collections, I want to update a 'lastChanged' field every time the record is updated with the current datetime. I want it to be in the same format as mongoose's default date like:

ISODate("2011-10-06T14: 01: 31.106Z")

Any words of wisdom?

Answer 1

If you just want an ISO String use:

new Date().toISOString()