Add timestamp in Firestore documents

Question

I\'m newbie to Firestore. Firestore docs says...

Important: Unlike \"push IDs\" in the Firebase Realtime Database, Cloud Firestore au

Answer 1

firebase.firestore.FieldValue.serverTimestamp()

Whatever you want to call it is fine afaik. Then you can use orderByChild('created').

I also mostly use firebase.database.ServerValue.TIMESTAMP when setting time

ref.child(key).set({
  id: itemId,
  content: itemContent,
  user: uid,
  created: firebase.database.ServerValue.TIMESTAMP 
})