我正在尝试在另一个查询中从 firebase 查询用户,但由于某种原因,但我无法让代码正常工作
不会运行的功能await usersRef.doc(uid).get();
可以在这里找到:
static getUserData(String uid) async {
return await usersRef.doc(uid).get();
}
static DirectMessageListModel getDocData(QueryDocumentSnapshot qdoc, String uid) {
Userdata postUser = Userdata.fromDoc(getUserData(uid));
return DirectMessageListModel.fromDoc(qdoc, postUser);
}
static DirectMessageListModel fromDoc(QueryDocumentSnapshot doc, Userdata altUser) {
return DirectMessageListModel(
doc['chatId'],
doc['lastMsgContent'],
doc['lastMsgType'],
altUser
);
}
父函数:
Stream<List<DirectMessageListModel>> getMeassageList(){
var snaps = FirebaseFirestore.instance.collection('directMessages').where('users', arrayContains: userdata!.uid).snapshots();
List<String> usersListElement = [];
return snaps.map((event) { return event.docs.map((e) {
usersListElement = [e.get('users')[0], e.get('users')[1]];
usersListElement.remove(userdata!.uid);
return DirectMessageListModel.getDocData(e, usersListElement.first);
}).toList();
});
}