如何将map转换为数组以进行firestore？扑
我有一个用户 ID，我想将其添加到 firestore，像这样
['GEcuHm3ICpWlEzfq1Z2tAjI2LII3', 'GEcuHm3ICpWlEzfq1Z2tAjI2LII3' ...]
我尝试了多种方法，但它不起作用
List membersListUid = [];
Future createGroup() async{
GroupRoomModel newGroup = GroupRoomModel(
groupName: groupName.text,
groupRoomId: uuid.v1(),
owner: userModel.uid,
membersList: controller.membersList,
membersListUid: controller.membersListUid.cast() // <---
);
}
...
Future createGroupFunc() async{
GroupRoomModel newGroup = GroupRoomModel(
groupName: groupName.text,
groupRoomId: uuid.v1(),
owner: userModel.uid,
membersList: controller.membersList,
membersListUid: controller.membersListUid.map((e)=> e).toList() //<---
);
...
也许这有助于理解代码
//Controller class
Map<String, dynamic>? userMap;
onSearch() async {
await _fireStore
.collection('users')
.where("email", isEqualTo: searchedMembers.text)
.get()
.then((value) {
userMap = value.docs[0].data();
});
update();
}
membersListUid.add({
"uid": userMap!['uid']
});
它仍然给我数组内的映射。
I have a users id I want to add it to firestore, like this
['GEcuHm3ICpWlEzfq1Z2tAjI2LII3', 'GEcuHm3ICpWlEzfq1Z2tAjI2LII3' ...]
I tried multiple ways but it didn't work
List membersListUid = [];
Future createGroup() async{
GroupRoomModel newGroup = GroupRoomModel(
groupName: groupName.text,
groupRoomId: uuid.v1(),
owner: userModel.uid,
membersList: controller.membersList,
membersListUid: controller.membersListUid.cast() // <---
);
}
...
Future createGroupFunc() async{
GroupRoomModel newGroup = GroupRoomModel(
groupName: groupName.text,
groupRoomId: uuid.v1(),
owner: userModel.uid,
membersList: controller.membersList,
membersListUid: controller.membersListUid.map((e)=> e).toList() //<---
);
...
Maybe this helps to understand the code
//Controller class
Map<String, dynamic>? userMap;
onSearch() async {
await _fireStore
.collection('users')
.where("email", isEqualTo: searchedMembers.text)
.get()
.then((value) {
userMap = value.docs[0].data();
});
update();
}
membersListUid.add({
"uid": userMap!['uid']
});
It's still gives me map within array.
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问题：
membersListUid是一个地图列表。这就是为什么您会在数据库中获得一组地图。您需要使用
uid键从地图中获取值，从而从每个 Map 中获取uid的实际值。解决方案：
将此行更新
为以下内容：
THE PROBLEM:
membersListUidis a List of Maps. That is why you get an array of Maps in your database.You need to get the actual value of the
uidfrom each Map by using theuidkey to get the value from the map.THE SOLUTION:
Update this line:
to this below: