如何将函数外部的变量传递给firebase事件

Question

下面是我在 nodeJS 服务器上运行的代码，我试图在'child_added' 事件触发后立即send an SMS message

// Twilio Credentials
var accountSid = '<AccountSid>';
var authToken = '<authToken>';


var twilio = require("twilio");
var client = new twilio.RestClient(accountSid, authToken);

// TWILIO Function
client.messages.create({
    to: "+12432056980", // This need to be obtained from firebase
    from: "+14352058756",
    body: "Hey There! Good luck on the bar exam!"
}, function(err, message) {
    console.log(message.sid);
});

以下是在将孩子添加到firebase database 后立即触发的事件，我想在触发以下事件后立即调用 TWILIO 函数（如上所示）并将手机号码传递给它来自以下函数的变量。

ref.limitToFirst(1).on('child_added', function(snapshot) { // This function triggers the event when a new child is added
  var userDetails = snapshot.val();
  var mobileNumber = userDetails.mobileNumber;

  //*** I would like to call the TWILIO CODE  at this point and pass it the 'mobileNumber' parameter

});

Answer 1

如果这两个操作在同一个文件中，您只需将Twilio 调用包装在一个函数中，然后从Firebase 操作中调用它，就像这样...

function sendSMS(dest, msg) {
    client.messages.create({
        to: dest,
        from: "+14352058756",
        body: msg
    }, function(err, message) {
        console.log(message.sid);
    });
}

ref.limitToFirst(1).on('child_added', function(snapshot) {
  var userDetails = snapshot.val();
  var mobileNumber = userDetails.mobileNumber;

  sendSMS(mobileNumber, "Hey There! Good luck on the bar exam!");
});

如果Twilio 操作在不同的文件中，您可以将其导出并要求使用Firebase 的位置

//twiliofile.js
module.exports.sendSMS = function(dest, msg) {
    client.messages.create({
        to: dest,
        from: "+14352058756",
        body: msg
    }, function(err, message) {
        console.log(message.sid);
    });
}

-

//firebasefile.js
var sms = require('./twiliofile.js');

ref.limitToFirst(1).on('child_added', function(snapshot) {
  var userDetails = snapshot.val();
  var mobileNumber = userDetails.mobileNumber;

  sms.sendSMS(mobileNumber, "Hey There! Good luck on the bar exam!");
});