Greetings everyone and thank you for your time upfront. As a very new member here i kindly ask to be not too harsh with me and my concern if i break any rule i wasnt aware of in this moment.
Situation: i was given flutter code to enhance with functions. The pre-existing code is getting data from a firestore database. I was asked to enhance the code to add user-management (admin functions). All persons involved are new to flutter so all code is basically done by examples from the net.
Problem: So far so ok, but as soon as i call a future function on a querysnapshot, i dont get any userdata. I tried different approaches but none actually worked (e.g. cycling though the snapshot via for-loop, added a Firestore Indexer, added the rules, etc.)
In the following i give you an oversight over the firestore structure and the latest attempt to retrieve the data and sending to a listview builder:
And this is the code:
final _auth = FirebaseAuth.instance;
CollectionReference _collectionRef =
FirebaseFirestore.instance.collection('users');
class _UserlistScreenState extends State<UserlistScreen> {
final currentUser = _auth.currentUser.email;
@override
void initState() {
getUserList();
print(traceCount++);
super.initState();
}
var traceCount = 0;
var snapshotData;
var itemCount;
var userList;
Future<QuerySnapshot> getUserList() async {
return userList = await _collectionRef
.doc('settings')
.collection('userSettings')
//.where('cid', isEqualTo: globals.CID)
.get();
}
/*Function Cycle() {
for (var doc in userList.docs) {
print(doc.data);
}
}*/
@override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
appBar: AppBar(
title: Hero(
tag: 'logo',
child: Image.asset(
'assets/rgb.png',
height: MediaQuery.of(context).size.height * 0.05,
fit: BoxFit.cover,
),
),
actions: [],
centerTitle: true,
elevation: 4,
),
body: BackgroundContainer(
child: Column(
children: [
Expanded(
child: FutureBuilder(
future: getUserList(),
builder:
(BuildContext context, AsyncSnapshot querySnapshot) {
if (querySnapshot.hasData) {
print(userList.docs); // test
/*return ListView(children: getUser(querySnapshot));*/ // also test
return ListView.builder(
itemCount: userList.docs.length,
itemBuilder: (BuildContext context, index) {
var xname = userList.docs[index]['name'].toString();
var xemail = userList.docs[index]['email'].toString();
final List<Map> _tableData = [
{'id': 'Name:', 'content': xname},
{'id': 'Email:', 'content': xemail},
];
return ListTile(
enabled: true,
selected: false,
tileColor: Colors.black,
leading: Icon(Icons.person),
title: Text('Name'),
subtitle: Text('Email'),
/*title: Text("Name: " +
// userList.data.docs[index].get('name')),
userList.data.docs[index]['name'].toString()),
subtitle: Text("Email: " +
userList.data.docs[index].get('email')),
// userList.data.docs[index]['email'].toString()),*/
onTap: () {
showModalBottomSheet(
context: context,
builder: (context) => Container(
height: 500,
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Table(
border: TableBorder(
horizontalInside:
BorderSide(width: 1)),
children: _tableData.map((data) {
return TableRow(
children: [
Container(
padding: EdgeInsets.all(8.0),
child: Text(data['id']),
),
Container(
padding: EdgeInsets.all(8.0),
child: Text(data['content']),
),
],
);
}).toList(),
),
),
),
);
},
);
},
);
} else {
return Center(
child: CircularProgressIndicator(),
);
}
}),
),
],
),
),
),
);
}
}Firestore rules:
rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write: if request.auth != null;
}
}
}FireStore Index enter image description here
I feel code-blinded and cant find the basic mistake i am relying on. Help much appreciated.
Kind regards
your settings field is a collection not a document,
so these two lines in your code are referring to the data that you want:
.doc('settings')
.collection('userSettings')
they should be the opposite, like:
Future<DocumentSnapshot> getUserList() async {
return userList = await FirebaseFirestore.instance
.doc('users/[email protected]/settings/userSettings')
.get();
}
the previous code would return the document "userSettings"