如何在创建触发器文档ID时获取云函数 [英] How to get cloud function onCreate trigger doc id
问题描述
我想获取触发oncreate函数的文档的ID,但我尝试使用 snap.params.id
,如下所示,但是我不确定.
I want to get the id of the document that trigger the oncreate function but i tried snap.params.id
like below but i am getting undefined.
当我在控制台上记录此 projectId
时,我变得未定义,有时会抛出错误,并且我使用的版本是"firebase-admin":〜5.12.1","firebase-functions";:"^ 1.0.3"
When i console log this projectId
, i am getting undefined and sometimes throws error and i am using version "firebase-admin": "~5.12.1", "firebase-functions": "^1.0.3"
exports.created = functions.firestore.document('projects/{projectId}')
.onCreate(snap => {
const projectId = snap.params.id;
const project = snap.data();
const notification = {
title: `${project.title}`,
projectId: `${projectId}`
}
});
那我该如何获取文件ID?
So how do i get the document id?
推荐答案
由于您使用的是Cloud Functions版本> = 1.0,因此 onCreate
的事件具有如下所示的两个参数,因此您应使用 context.params
.
Since you use a Cloud Functions version >= 1.0, events for onCreate
have two parameters as shown below, and you should use context.params
.
exports.created = functions.firestore.document('projects/{projectId}')
.onCreate((snap, context) => {
const projectId = context.params.projectId;
const project = snap.data();
//......
});
有关更多详细信息,请参见此文档项目.
See this doc item for more detail.
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