Question 119845 in Firebase Question posted in
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Firebase – How to get data from Firestore at Flutter

I am new at Flutter and Firebase, I just want to fetch data from Firestore, for example here, I just want to fetch the value of "KullaniciAdi" from the "[email protected]" document, as simply as possible.

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2

Answers


  1. 0

    I think the structure of the folders is confusing, in general the documents are IDs, like this:

    Example:

    Collection (users) – Document (sALkf983l3j5RGjsk82lfds) – Fields (name, email, gender)

    In this case you could make a call like this:

    final FirebaseFirestore firestore = FirebaseFirestore.instance;

final DocumentSnapshot docUser =
          await firestore.collection('users').doc('sALkf983l3j5RGjsk82lfds').get();

    You can do it:

    final FirebaseFirestore firestore = FirebaseFirestore.instance;

final DocumentSnapshot docUser =
          await firestore.collection('KullaniciAdi').doc('[email protected]').get();

    Editing:

    To fetch a specific field value:

     final ref =  await FirebaseFirestore.instance
        .doc('users/$userId').get();
    final value = ref.get('name');
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  2. 0 
    StreamBuilder<QuerySnapshot>(
        stream: viewDetails(),
        builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
          if (snapshot.hasData) {
            for (int i = 0; i < snapshot.data!.docs.length; i++) {
              if (snapshot.data!.docs[i].id == "[email protected]") {
                final DocumentSnapshot e = snapshot.data!.docs[i];
                dersiniz = "${e["Dersiniz"]}";
                return Center(child: Text(dersiniz),);
                
                
                
              }
            }
          },
          )


static Stream<QuerySnapshot> viewDetails() {
    CollectionReference notesItemCollection = FirebaseFirestore.instance.collection("KullaniciAdi");

    return notesItemCollection.snapshots();
  }

    used like this

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