我想在中的云FireStore中创建/更新一组存储在嵌套数组方法中的数据.
I want to define the nested array to be in a Map<String, dynamic> method like this.
我想在中的云FireStore中创建/更新一组存储在嵌套数组方法中的数据.
I want to define the nested array to be in a Map<String, dynamic> method like this.
首先，您必须创建类别模型的实例，然后根据您的需求更改值
100
Categories c = categories; // here assign your exiting data of categories
c.copyWith(flavor : ["hello","world"]);
await FirebaseFirestore.instance
.collection('user')
.doc(FirebaseAuth.instance.currentUser?.uid)
.collection('todos')
.doc(map["collectionId"])
.update(FieldValue.arrayUnion(c)))