How to get document id in firestore flutter using QuerySnapshot - firebase

Question

I am trying to get data (In real-time) from my database using QuerySnapshot.
and I need to update my data as well. This is my method and I don't know how to get my documentID in this method.
class LoadData extends StatefulWidget {
const LoadData({Key? key}) : super(key: key);
#override
_LoadDataState createState() => _LoadDataState();
}
class _LoadDataState extends State<LoadData> {
//Read Data in realTime Snapshot
final Stream<QuerySnapshot> _cupCakeStream = FirebaseFirestore.instance
.collection('cupcake')
.snapshots(includeMetadataChanges: true);
#override
Widget build(BuildContext context) {
return StreamBuilder<QuerySnapshot>(
stream: _cupCakeStream,
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (snapshot.hasError) {
return Text('Something went wrong');
}
if (snapshot.connectionState == ConnectionState.waiting) {
return Text("Loading");
}
return ListView(
shrinkWrap: true,
children: snapshot.data!.docs.map((DocumentSnapshot document) {
Map<String, dynamic> data =
document.data()! as Map<String, dynamic>;
print(data); //**Print collection only..I need to get documentID with each collection**
return ListTile(
title: Text(data['cupcake_name']),
subtitle: Text(data['description']),
);
}).toList(),
);
},
);
}
}

Answer 1

document is a DocumentSnapshot and has an id property.
So, the following should do the trick:
return ListView(
shrinkWrap: true,
children: snapshot.data!.docs.map((DocumentSnapshot document) {
Map<String, dynamic> data =
document.data()! as Map<String, dynamic>;
print(data);
print(document.id); // <= Should print the doc id
return ListTile(
title: Text(data['cupcake_name']),
subtitle: Text(data['description']),
);
}).toList(),
);