更新user_id与currentUser uid相同的Firestore文档 [英] Update Firestore document where user_id is same as currentUser uid

问题描述

我具有用于创建或更新客户的功能.

I have the function that I am using to create or update customer.

我能够成功写入db.我创建了一个名为user_id的字段，将currentUser uid保存到该字段中，这样我就只能读取已登录的用户文档.

I am able to successfully write to db. I created a field called user_id where I save the currentUser uid into so I can read only logged in user documents.

但是，我无法更新文档，因为我知道我可能没有正确引用文档.

However, I am unable to update the documents because I know I'm probably not referencing the document the right way.

我收到以下错误:

Flutter:错误:PlatformException(错误5，FIRFirestoreErrorDomain，否 文档更新:

flutter: Error: PlatformException(Error 5, FIRFirestoreErrorDomain, No document to update:

我在做什么错了?

这是我的以下功能:

  Future createOrUpdateCustomer(Customer customer, bool isUpdating) async {
    FirebaseUser user = await FirebaseAuth.instance.currentUser();
    String userId = user.uid;
    print('Current logged in user uid is: $userId');

    CollectionReference customerRef =
        await Firestore.instance.collection('customers');

    if (isUpdating) {
      customer.updatedAt = Timestamp.now();    
      customer.userId = userId;    
      await customerRef.document().updateData(customer.toMap());
      print('updated customer with id: ${customer.id}');
      print('updated customer with logged in uid: ${customer.userId}');
    } else {
      customer.createdAt = Timestamp.now();

      DocumentReference documentReference = customerRef.document();

      customer.id = documentReference.documentID;
      customer.userId = userId;

      print('created customer successfully with id: ${customer.id}');

      await documentReference.setData(customer.toMap(), merge: true);
      addCustomer(customer);
    }
    notifyListeners();
  }

推荐答案

您正在尝试更新不存在的文档.在这一行，

You are trying to update a nonexistent document. In this line,

await customerRef.document().updateData(customer.toMap())

您正在使用随机生成的ID创建文档参考.您应该明确设置要更新的文档的id.

You are creating a document reference with a randomly-generated id. You should explicitly set the id of the document you're updating.

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