我浏览了 firebase 文档,使用 Firebase 的 Cloud Functions 更新实时数据库中的值,但无法理解。
我的数据库结构是
{
"user" : {
"-KdD1f0ecmVXHZ3H3abZ" : {
"email" : "[email protected] /cdn-cgi/l/email-protection",
"first_name" : "John",
"last_name" : "Smith",
"isVerified" : false
},
"-KdG4iHEYjInv7ljBhgG" : {
"email" : "[email protected] /cdn-cgi/l/email-protection",
"first_name" : "Max1",
"last_name" : "Rosse13131313l",
"isVerified" : false
},
"-KdGAZ8Ws6weXWo0essF" : {
"email" : "[email protected] /cdn-cgi/l/email-protection",
"first_name" : "Max1",
"last_name" : "Rosse13131313l",
"isVerified" : false
}
}
我想使用数据库触发云函数更新 isVerified。我不知道如何使用云函数更新数据库值(语言:Node.JS)
我编写了一段代码,当使用数据库触发器 onWrite 创建用户时,自动更新用户的键“isVerified”的值。我的代码是
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.userVerification = functions.database.ref('/users/{pushId}')
.onWrite(event => {
// Grab the current value of what was written to the Realtime Database.
var eventSnapshot = event.data;
if (event.data.previous.exists()) {
return;
}
eventSnapshot.update({
"isVerified": true
});
});
但是当我部署代码并将用户添加到数据库时,云函数日志显示以下错误
TypeError: eventSnapshot.child(...).update is not a function
at exports.userVerification.functions.database.ref.onWrite.event (/user_code/index.js:10:36)
at /user_code/node_modules/firebase-functions/lib/cloud-functions.js:35:20
at process._tickDomainCallback (internal/process/next_tick.js:129:7)