Question

尝试根据他们选择的语言主题向其他用户发送通知。

在我的应用中，我向用户订阅了：

_fcm.subscribeToTopic('english');

这是我的index.js代码

const functions = require('firebase-functions');
const admin = require('firebase-admin');
 
admin.initializeApp(functions.config().firebase);
 
var newData;
 
exports.messageTrigger = functions.firestore.document('notifications/default/{languageId}/{messagesId}').onCreate(async (snapshot, context) => {
newData = snapshot.data();
const payload = {
    notification: {
        title: newData.message,
        body: newData.body,
    },
        data: {
      click_action: 'FLUTTER_NOTIFICATION_CLICK',
      message: newData.message,
    }

};
if (context.param.languageId === "english") {
    await admin.messaging().sendToTopic('english', payload);
  }
  else if (context.param.languageId=== "arabic") {
    await admin.messaging().sendToTopic('arabic', payload);
  }
});

这是它在firebase上的函数登录上给我的错误：

messageTrigger

TypeError: Cannot read property 'languageId' of undefined at exports.messageTrigger.functions.firestore.document.onCreate (/srv/index.js:21:19) at cloudFunction (/srv/node_modules/firebase-functions/lib/cloud-functions.js:132:23) at /worker/worker.js:825:24 at <anonymous> at process._tickDomainCallback (internal/process/next_tick.js:229:7)

FCM：TypeError：无法读取未定义的属性“ languageId”

0 个答案: