Firestore/Flutter-如何获取文件ID? [英] Firestore / Flutter - How can I get document Id?

问题描述

这是我的代码

Future _save() async {

final StorageReference storageRef = FirebaseStorage.instance.ref().child('product/'+nameController.text+'.jpg');
final StorageUploadTask task = storageRef.putFile(_image);
StorageTaskSnapshot taskSnapshot = await task.onComplete;
String downloadUrl = await taskSnapshot.ref.getDownloadURL();
StorageMetadata created = await taskSnapshot.ref.getMetadata();

Firestore.instance.collection('product').document()
    .setData({
  'name': nameController.text,
  'price': int.tryParse(priceController.text),
  'description': descriptionController.text,
  'creator': widget.user.uid,
  'created': DateTime.fromMillisecondsSinceEpoch(created.creationTimeMillis, isUtc: true).toString(),
  'modified': DateTime.fromMillisecondsSinceEpoch(created.updatedTimeMillis, isUtc: true).toString(),
  'url': downloadUrl,
  'id': //I want to set document Id here //
});
}

如何获取此随机生成的文档ID?谢谢您的帮助

how can I get this random generated document's ID? Thank you for your help

推荐答案

在 collection 之后，您可以添加 document 并接收 DocumentReference .

After collection you can add a document and receive the DocumentReference .

  final docRef = await Firestore.instance.collection('product').add({
    'name': nameController.text,
    'price': int.tryParse(priceController.text),
    'description': descriptionController.text,
    'creator': widget.user.uid,
    'created': DateTime.fromMillisecondsSinceEpoch(created.creationTimeMillis, isUtc: true).toString(),
    'modified': DateTime.fromMillisecondsSinceEpoch(created.updatedTimeMillis, isUtc: true).toString(),
    'url': downloadUrl,
  });

现在您可以获取文档ID:

Now you can get the document ID:

 docRef.documentID 

这篇关于Firestore/Flutter-如何获取文件ID?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！