Question 120765 in Firebase Question posted in
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Firebase – Get the id of a firestore document in flutter

after following the flutter documentation code to send data to a new screen, I want to retrieve the firestore id of the todo instance in the detail screen. is there a way to do that?
this is the detail screen:

  const DetailScreen({super.key});

  @override
  Widget build(BuildContext context) {
    final todo = ModalRoute.of(context)!.settings.arguments as Todo;

    // Use the Todo to create the UI.
    return Scaffold(
      appBar: AppBar(
        title: Text(todo.title),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Text(todo.description),
      ),
    );
  }
}
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2

Answers


  1. 0

    When storing or reading the item(s) from the database you should keep the handle of the document ID. Then, when you move to the detail page you can do a firebase lookup on the document ID of the todo instance like so:

    final docRef = db.collection("myCollection").doc(todoId);
docRef.get().then(
  (DocumentSnapshot doc) {
    final data = doc.data() as Map<String, dynamic>;
    // ...
  },
  onError: (e) => print("Error getting document: $e"),
);

    This answer covers sending data between flutter screens. See the Firebase docs here.

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  2. 0

    just use

    var todoId = await db.collection("todoCollection").doc(todoId).id;
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