creating a database with firstore

1import 'package:cloud_firestore/cloud_firestore.dart';
2// for flutter users get cloud_firestore in your pubspec.yaml file  and import in your file
3
4
5class DatabaseService {
6
7// creating  a user id for individual users that sign into your app 
8  final String uid;
9  DatabaseService({this.uid})
10  
11
12 final CollectionReference Collection = FirebaseFirestore.instance.collection('Home');
13 
14 // creating a database for users that is login your app 
15 Future updateUserData(String name, String friends, int age) async {
16    var data = {
17   'name' : name,
18   'friends' : friends,
19   'age' : age,
20   };
21   
22   return await Collection.doc(uid).set(data);
23 }
24// or 
25
26 return await brewCollection.doc(uid).setData({
27   'name' : name,
28   'friends' : friends,
29   'age' : age,
30     });
31
32}