How to add timestamp to every collection insert,update in Cloud Functions for firestore database

Question

I have a firestore collection called Posts I make an insert on the client side and it works.

I want to add the createdAt and updatedAt fields to every insert in my p

Answer 1

You do not need Cloud Functions to do that. It is much simpler (and cheaper) to set server timestamp in client code as follows:

var timestamp = firebase.firestore.FieldValue.serverTimestamp()   
post.createdAt = timestamp
post.updatedAt = timestamp