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FutureBuilder with a Firestore query on a field of Type timestamp comes back with no data in snapshot. However, the same query without the orderBy works just fine.
What am I missing ? Thanks for the help.
// Working code
future: Firestore.instance.collection('messages').where('toid',isEqualTo: _emailID).getDocuments(),
builder: (context, snapshot) ...
// Not Working - returns to if(!snapshot.hasData)
future: Firestore.instance.collection('messages').where('toid',isEqualTo: _emailID).orderBy('_timeStampUTC', descending: true).getDocuments(),
builder: (context, snapshot) ...
760
You can specify the sort order for your data using orderBy() , and you can limit the number of documents retrieved using limit() . Note: An orderBy() clause also filters for existence of the given field. The result set will not include documents that do not contain the given field.
If you want to use server generated value which would be better so you don't depend on device time, use this: Map<String, dynamic> data = { 'name': userName, 'userUID': userUIDglobal, 'time': FieldValue. serverTimestamp(), }; Firestore.
256 MB from the REST API; 16 MB from the SDKs. The total data in each write operation should be less than 256 MB. Multi-path updates are subject to the same size limitation.
I think you are missing a ' here '_timeStampUTC, so it should be:
orderBy('_timeStampUTC', descending: true)
EDIT:
Also, you need to be sure to create an index for toid and other for _timeStampUTC, this is done when you try to order by a property that is not in you the where of the query.
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