Question

这个问题比较常见，但我相应地修改了v 1.0的新版本代码。 .. 通常，代码必须根据新版本工作。但它没有，我问为什么它可能

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

exports.sendNotification = functions.database.ref('/notifications/{user_id}/{notification_id}')
.onWrite((change, context) => {

  //const user_id = context.params.user_id;
  //const notification = context.params.notification_id;

  console.log('The User Id is : ',context.params.user_id);
});

这是错误

TypeError: Cannot read property 'user_id' of undefined
at exports.sendNotification.functions.database.ref.onWrite.event (/user_code/index.js:7:31)
at Object.<anonymous> (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:112:27)
at next (native)
at /user_code/node_modules/firebase-functions/lib/cloud-functions.js:28:71
at __awaiter (/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:716:24
at process._tickDomainCallback (internal/process/next_tick.js:135:7)

这是我的数据库 numpy.moveaxis

为什么user_id仍未定义？

TypeError：无法读取属性＆＃39; user_id＆＃39;未定义的新版本

0 个答案: