Firestore / Flutter - How to get document Id?

Firestore / Flutter - How to get document Id?

In Firestore with Flutter, you can get the document ID by using the id property on a DocumentSnapshot object. Here's an example:

import 'package:cloud_firestore/cloud_firestore.dart'; void getDocumentId() async { // Replace 'your_collection' and 'your_document' with your actual collection and document names String collectionName = 'your_collection'; String documentId = 'your_document'; DocumentReference docRef = FirebaseFirestore.instance.collection(collectionName).doc(documentId); try { DocumentSnapshot docSnapshot = await docRef.get(); if (docSnapshot.exists) { // Access document ID using the 'id' property String documentId = docSnapshot.id; print('Document ID: $documentId'); } else { print('Document does not exist'); } } catch (e) { print('Error getting document: $e'); } }

Make sure to replace 'your_collection' and 'your_document' with your actual collection and document names. This code retrieves a document reference using the specified collection and document IDs, then gets a DocumentSnapshot and accesses its ID using the id property.

Examples

  1. Flutter Firestore get document ID in a StreamBuilder

    • Description: Retrieve the document ID within a StreamBuilder in Flutter.
    StreamBuilder( stream: FirebaseFirestore.instance.collection('your_collection').snapshots(), builder: (context, snapshot) { if (snapshot.hasData) { QuerySnapshot querySnapshot = snapshot.data; for (QueryDocumentSnapshot document in querySnapshot.docs) { String documentId = document.id; // Your code using documentId } } return YourWidget(); }, );

  2. Flutter Firestore get document ID using FutureBuilder

    • Description: Get the document ID using FutureBuilder in Flutter.
    FutureBuilder( future: FirebaseFirestore.instance.collection('your_collection').doc('your_document').get(), builder: (context, snapshot) { if (snapshot.hasData) { DocumentSnapshot document = snapshot.data; String documentId = document.id; // Your code using documentId } return YourWidget(); }, );

  3. Flutter Firestore get document ID in a query

    • Description: Extract the document ID from a Firestore query result in Flutter.
    QuerySnapshot querySnapshot = await FirebaseFirestore.instance.collection('your_collection').get(); for (QueryDocumentSnapshot document in querySnapshot.docs) { String documentId = document.id; // Your code using documentId }

  4. Flutter Firestore get document ID in a DocumentReference

    • Description: Access the document ID from a DocumentReference in Flutter.
    DocumentReference documentRef = FirebaseFirestore.instance.collection('your_collection').doc('your_document'); DocumentSnapshot document = await documentRef.get(); String documentId = document.id; // Your code using documentId

  5. Flutter Firestore get document ID in a StreamBuilder with index

    • Description: Use the index parameter in a StreamBuilder to access the document ID in Flutter.
    StreamBuilder( stream: FirebaseFirestore.instance.collection('your_collection').snapshots(), builder: (context, snapshot) { if (snapshot.hasData) { QuerySnapshot querySnapshot = snapshot.data; int index = 0; for (QueryDocumentSnapshot document in querySnapshot.docs) { String documentId = document.id; // Your code using documentId and index index++; } } return YourWidget(); }, );

  6. Flutter Firestore get document ID in a ListView.builder

    • Description: Use a ListView.builder to display Firestore documents with their IDs in Flutter.
    ListView.builder( itemCount: yourQuerySnapshot.docs.length, itemBuilder: (context, index) { String documentId = yourQuerySnapshot.docs[index].id; // Your code using documentId return YourListItemWidget(); }, );

  7. Flutter Firestore get document ID in a DocumentSnapshot callback

    • Description: Access the document ID from a DocumentSnapshot using a callback function in Flutter.
    void _onDocumentReceived(DocumentSnapshot document) { String documentId = document.id; // Your code using documentId } FirebaseFirestore.instance.collection('your_collection').doc('your_document').get().then(_onDocumentReceived);

  8. Flutter Firestore get document ID with a where clause

    • Description: Use a where clause in a query to filter documents and retrieve their IDs in Flutter.
    QuerySnapshot querySnapshot = await FirebaseFirestore.instance .collection('your_collection') .where('your_field', isEqualTo: 'your_value') .get(); for (QueryDocumentSnapshot document in querySnapshot.docs) { String documentId = document.id; // Your code using documentId }

  9. Flutter Firestore get document ID with a limit

    • Description: Limit the number of documents in a query and retrieve their IDs in Flutter.
    QuerySnapshot querySnapshot = await FirebaseFirestore.instance .collection('your_collection') .limit(5) .get(); for (QueryDocumentSnapshot document in querySnapshot.docs) { String documentId = document.id; // Your code using documentId }

  10. Flutter Firestore get document ID with orderBy

    • Description: Order the documents in a query and retrieve their IDs in Flutter.
    QuerySnapshot querySnapshot = await FirebaseFirestore.instance .collection('your_collection') .orderBy('your_field') .get(); for (QueryDocumentSnapshot document in querySnapshot.docs) { String documentId = document.id; // Your code using documentId }

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