How can I add server timestamp to a document? (Firestore)

[matanmarciano]

Hello, following your documentation, I add val timestamp: Double = ServerValue.TIMESTAMP to my data model.
after adding the document to the firestore DB, I cant see the 'timestamp' field in my firestore console.

and if I create my data model and provide implicit ServerValue.TIMESTAMP, the document contains timestamp with value: 'Infinity'

So my question is- How can I add server timestamp to a document?
how can I get all documents ordered by this timestamp?
@nbransby nbransby

[nbransby]

I suspect this is caused by a bug we are tracking here #113

[matanmarciano]

@nbransby
Thanks for your reply,
I'm not sure that is a decoding issue...the documentation is not so clear so I will try to describe what I did:

1. set Message data class:

@Serializable
data class Message(val name: String, val text: String, val timestamp: Double = ServerValue.TIMESTAMP)

2. Push this object to Firestore by:

class RoomChatFirestore(roomId : String) : RoomChat {
    private val firebaseFirestore : FirebaseFirestore = Firebase.firestore(Firebase.app)
    private val messagesCollection = firebaseFirestore.collection("$ROOT_CHAT_COLLECTION/$roomId/$ROOM_CHAT_MESSAGES_COLLECTION")

    override fun sendMessage(name :String, text: String) {
        CoroutineScope(GlobalScope.coroutineContext).launch {
            val message = Message(name, text)
            messagesCollection.add(message, Message.serializer())
        }
    }
}

3. Go to my Firebase console -> Firestore..and this is what I see:
   

as you can see, there is no timestamp field in my message document - is that OK?

if is that OK, how can I observe the collection changes ordered by this timestamp?

[matanmarciano]

@nbransby Any ideas?

[matanmarciano]

@nbransby @CoreyKaylor ?