retrieve data from firebase flutter
static Future<List<AustinFeedsMeEvent>> _getEventsFromFirestore() async {
CollectionReference ref = Firestore.instance.collection('events');
QuerySnapshot eventsQuery = await ref
.where("time", isGreaterThan: new DateTime.now().millisecondsSinceEpoch)
.where("food", isEqualTo: true)
.getDocuments();
HashMap<String, AustinFeedsMeEvent> eventsHashMap = new HashMap<String, AustinFeedsMeEvent>();
eventsQuery.documents.forEach((document) {
eventsHashMap.putIfAbsent(document['id'], () => new AustinFeedsMeEvent(
name: document['name'],
time: document['time'],
description: document['description'],
url: document['event_url'],
photoUrl: _getEventPhotoUrl(document['group']),
latLng: _getLatLng(document)));
});
return eventsHashMap.values.toList();
}