Firebase 云功能 - 将文档添加到 firestore 时将通知推送到 iOS 设备

Question

我已经阅读了多篇关于如何发送推送通知的文章和堆栈溢出 posts。我曾尝试在我的 firestore 集合上使用集合监听器，但它最终会在应用程序关闭时发送所有文档的通知。然后，我尝试了 firebase 云函数，但似乎总是出现错误，即使我已经从媒体或堆栈溢出中获取它 post 并将其修改到我的数据库中。

每次我运行 $firebase 在终端部署时，我都会收到这个错误：

20:7  error  Parsing error: Unexpected token body

✖ 1 problem (1 error, 0 warnings)

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! functions@ lint: `eslint .`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the functions@ lint script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/g30r93g/.npm/_logs/2018-07-10T00_28_45_371Z-debug.log

Error: functions predeploy error: Command terminated with non-zero exit code1

这是我的 javascript 代码：

const functions = required('firebase-functions');
const admin = required('firebase-admin');

// initializes your application
admin.initializeApp(functions.config().firebase);

exports.sendPushNotification = functions.firestore
 .document("Users/{user-ID}/sub-Collection/{sub-Document-ID}")
 .onCreate((events) => {

// Access data required for payload notification
const data = event.data.data();
const senderName = data.storeName;

// Determine the message
const payload = {
  notification: {
  title: "New Document"
  body: "Tap me to show new document"
  sound: 'default'
  badge: '1'
 }
}

// Get the user's tokenID
var pushToken = "";
return functions
.firestore
  .collection("Users/{user-ID}")
  .get()
  .then((doc) => {
    pushToken = doc.data().tokenID;
    // Send the message to the device
    return admin.messaging().sendTodevice(pushToken, message)
  });
});

提前感谢您的任何回复。

Answer 1

您输入的内容无效JavaScript。您的 payload 对象需要其字段和值以逗号分隔：

// Determine the message
const payload = {
  notification: {
    title: "New Document",
    body: "Tap me to show new document",
    sound: 'default',
    badge: '1'
  }
}

注意结尾的逗号。

错误消息是 "Parsing error: Unexpected token body"。它特别抱怨它意外地找到了 "body" 字段，这可能是你挂断它的线索。

Answer 2

我用打字稿来做这个。以下是希望在其项目中实现此功能的任何其他人的最终代码：

const functions = require('firebase-functions');
const admin = require('firebase-admin');

// initializes your application
admin.initializeApp(functions.config().firebase);

exports.sendPushNotification = functions.firestore
 .document("Users/{user-ID}/sub-Collection/{sub-Document-ID}")
 .onCreate((events) => {

  // Access data required for payload notification
  const data = event.data.data();
  const senderName = data.name;

  // Determine the message
  const message = {
    notification: {
    title: "New Document",
    body: "Tap me to show new document",
    sound: 'default',
    badge: '1'
   }
  }

  // Get the user's tokenID
  var pushToken = "";
  return functions
  .firestore
   .collection("Users/{user-ID}")
    .get()
    .then((doc) => {
      pushToken = doc.data().tokenID;
      // Send the message to the device
      return admin.messaging().sendTodevice(pushToken, message)
    });
});

Answer 3

这是对我有用的语法。

exports.sendExpNotifications = functions.firestore
      .document('sandwiches/{sandwich}')
      .onCreate((docSnapshot , context) => {

            // Access data required for payload notification
            const experience = docSnapshot.data();
            const senderName = experience.senderDisplayName
            const recipID = experience.recipID

            return admin.firestore().doc('users/' + recipID).get().then(userDoc =>{
                const token = userDoc.get('token')
             console.log(token)
                const payload = {
                    notification : {
                        title : senderName + " sent you a message.",
                        body : "notificationBody"
                    }

                }

                return admin.messaging().sendToDevice(token,payload);
              })
      });

Firebase 云功能 - 将文档添加到 firestore 时将通知推送到 iOS 设备

Firebase Cloud Function - Push a notification to iOS device when document is added to firestore

javascript

swift

firebase

google-cloud-functions

firebase-notifications