CloudFirestore触发器：如何在云功能中获取触发的firestore文档的数据 [英] CloudFirestore Triggers :How to get the data of the triggered firestore document in cloud functions

问题描述

我写了一个云函数来获取触发的文档数据。但我得到[对象]

I wrote a cloud functions to get the triggered document data . But I am getting [object object]

我的代码是：

exports.accept = functions.firestore
.document('deyaPayUsers/{aID}/Split/{aID1}/ReceivedInvitation/{autoIds}')
  .onWrite(event=>{
  const db1 = admin.firestore();
  const MAuth = event.params.aID;
  console.log("mauthid"+MAuth);
  const MAuth1 = event.params.aID1;
  const resautoid = event.params.autoIds;
  console.log("resss"+resautoid);
var document = event.data.data();//not getting data 
    console.log("newvalue is :"+document);it prints [object object]

  });

如何使用FireStore触发器中的云函数获取数据。

How to get the data using cloud functions from FireStore triggers.

推荐答案

当您调用 event.data.data（）时，您将文档数据作为JavaScript对象返回。显然， [Object object] 是一个JavaScript对象的打印方式。如果要将JSON视为字符串，请使用 JSON.stringify 进行转换。例如

When you call event.data.data() you get the document data back as a JavaScript object. Apparently that [Object object] is how a JavaScript object is printed. If you want to see the JSON as a string, use JSON.stringify to convert it. E.g.

console.log(JSON.stringify(event.data.data());

为了更容易阅读JSON，您可能还需要考虑：

To make it easier to read the JSON, you might also want to consider:

console.log(JSON.stringify(event.data.data(), null, '  ');

有关详细信息，请参阅 JSON.stringify 的文件rel =nofollow noreferrer。

For more information see the documentation for JSON.stringify on MDN.

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