[英]How to create a collection which has a sub collection in firebase firestore?
[英]How to create sub collection to firebase firestore document
CollectionReference ref1 =
FirebaseFirestore.instance.collection('chatrooms');
await ref1.doc('doc').set({"chatid": chatroom});
await ref1
.doc('doc')
.collection('messages')
.add({"message": _message.text});
你可以这样拆分
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