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在JS中使用云函数将数据设置为FireStore

google-cloud-functions google-cloud-firestore firebase node.js

0

David Henry · 技术社区 · 8 年前

创建新用户后,我想将数据添加到FireStore中的新集合中。

我有自己的职能设置;

exports.createUser = functions.firestore.document('Users/{userId}')
    .onCreate((snap, context) => {
        const newValue = snap.data();
        if (snap.data() === null) return null;
        const userRef = context.params.userId
        console.log("create user found " + (userRef))
        let notificationCollectionRef = firestoreDB.collection('Users').document(userRef).collection('Notifications')
        let notificationDocumentRef = notificationCollectionRef.document('first notification')
        return notificationDocumentRef.set({
            notifications: "here is the notificiation"
        }, {merge: true});
});

当运行这个函数时,我得到了控制台日志,正确地打印出了用户ID,但是我得到了以下错误;

类型错误:firestoredb.collection(…).document不是函数。在exports.createuser.functions.firestore.document.oncreate上(/user_code/index.js:23:73) 在对象处。(/user_code/node_modules/firebase函数/lib/cloud函数.js:112:27) 下一个(本机) at/user_code/node_modules/firebase functions/lib/cloud functions.js:28:71 at_uuu等待程序(/user_code/node_modules/firebase functions/lib/cloud functions.js:24:12) at cloudfunction(/user_code/node_modules/firebase functions/lib/cloud functions.js:82:36) AT/var/tmp/worker/worker.js:728:24 at process.TickDomainCallback(内部/process/next_Tick.js:135:7)

我不熟悉JS&函数。一如既往,任何帮助都非常感谢。

2 回复 | 直到 8 年前

1

2

Doug Stevenson 8 年前

firestoreDB.collection('Users') 返回 CollectionReference 对象。您正在尝试对调用的方法调用 document() 但是,正如您从API文档中看到的,没有这样的方法。我想你打算用 doc() 而是建立一个 DocumentReference .

    let notificationCollectionRef = firestoreDB.collection('Users').doc(userRef).collection('Notifications')
    let notificationDocumentRef = notificationCollectionRef.doc('first notification')

2

David Henry 8 年前

以下是完整的工作代码:

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

const firestoreDB = admin.firestore()

// Create and Deploy Your First Cloud Functions
// https://firebase.google.com/docs/functions/write-firebase-functions

exports.helloWorld = functions.https.onRequest((request, response) => {
 response.send("Hello from Firebase Cloud Functions!");
 console.log("function triggered")
});

exports.createUser = functions.firestore.document('Users/{userId}')
    .onCreate((snap, context) => {
        const newValue = snap.data();
        if (snap.data() === null) return null;
        const uid = context.params.userId
        let notificationCollectionRef = firestoreDB.collection('Users').doc(uid).collection('Notifications')
            return notificationCollectionRef.add({
                notification: 'Hello Notification',
                notificationType: 'Welcome'
            }).then(ref => {
               return console.log('notification successful', ref.id)
            })
        });