无法从 Firebase 子集合 Flutter 中获取文档列表

Question

I am creating an application where I need to have 3 heirarchy for email folders and notes like this: Now I'm not able to get the list of documents under the folder collection.

I have tried this till now:

var collection = FirebaseFirestore.instance
    .collection('user')
    .doc(widget.email)
    .collection('folder2');
await collection.get().then((snap) {
  data = snap.size;
  print(data);
});

But this is just giving me 0 in the console, but showing all the entries for the notes collection so what should I do?

Answer 1

try using the length of the documents retrieved in the result.

var collection = FirebaseFirestore.instance
    .collection('user')
    .doc(widget.email)
    .collection('folder2');
await collection.get().then((snap) {
  data = snap.docs.length;
  print(data);
});

Answer 2

So I did get all the documents in the folder level by simply adding a few fields in that Collection like name, description etc. Though I still don't see a way to get all the documents containing subcollections without adding any fields.