如何使用 Firebase Functions 将 FCM 发送给用户？

Question

Firebase 目前推出 Firebase Functions 添加服务器端代码

Firebase Functions

我想知道当数据库发生某些变化时，是否可以通过这些函数调用 FCM 通知。

Answer 1

Firebase SDK for Cloud Functions includes the Firebase Admin SDK, you can find an example that we made here Send Firebase Cloud Messaging notifications for new followers

简述：

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);

exports.foo = functions.database.ref('/bar').onWrite(event => {
  const tokens = ...;
  const payload = ...;
  return admin.messaging().sendToDevice(tokens, payload);  
})