How to acces data from StreamProvider Flutter - firebase

Question

I'm trying to show a list of reminder where user see all their reminders and able to edit it. I'm using StreamProvider so that I'm able to access in child widget. I map the DocumentSnapShot into MedReminder object. The StreamProvider should return List of MedReminder object. But in the ReminderList widget the Provider return null.
Stream:
List<MedReminder> _medReminderListFromSnapshot(QuerySnapshot snapshot) {
print('here is db');
return snapshot.documents.map((doc) {
return MedReminder(
remindId: doc.data['remindId'] ?? '',
howManyTimeDay: doc.data['howManyTimeDay'] ?? '',
frequency: doc.data['frequecy'] ?? '',
hour: doc.data['hour'] ?? '',
min: doc.data['min'] ?? '',
dateStarted: doc.data['dateStarted'] ?? '',
dateEnded: doc.data['dateEnded'] ?? '',
dateRefill: doc.data['dateRefill'] ?? '',
quantityTime: doc.data['quantityTime'] ?? '',
);
}).toList();
}
Stream<List<MedReminder>> get medReminders {
return userCollection.document(uid).collection('medic_reminder').snapshots()
.map(_medReminderListFromSnapshot);
}
Reminder Page:
Widget build(BuildContext context) {
final user = Provider.of<User>(context);
return StreamProvider<List<MedReminder>>.value(
value: DatabaseService(uid: user.uid).medReminders,
child: Scaffold(
body: Container(
child: ReminderList(),
),
),
);
}
Reminder List widget(here the provider returning null):
Widget build(BuildContext context) {
final reminders = Provider.of<List<MedReminder>>(context) ?? [];
reminders.forEach((reminder) {
print(reminder.remindId);
});
return ListView.builder(
itemCount: reminders.length,
itemBuilder: (context, index) {
return ReminderTile();
});
}
Please help me thanks.

Answer 1

Stream<List<MedReminder>> get medReminders {
return userCollection.snapshots()
.map(_medReminderListFromSnapshot);
}
Store Data In userCollection with uid, dont add other collections
like
collectionReference userCollection = Firestore.instance.collection('users');
when saving data in 'users'
userCollection.document(uid).setData()..
then it works