如何在Facebook Messenger中展示个性化的“欢迎讯息”？ [英] How to show personalized 'Welcome Message' in facebook messenger?

问题描述

我想向欢迎来到我的应用程序显示欢迎信。
所以我需要发送：

1. https://graph.facebook.com/v2.6/USER_ID?fields=first_name ，last_name，profile_pic，locale，时区，性别& access_token = PAGE_ACCESS_TOKEN




2. 使用第一个请求中的first_name，发送 https://graph.facebook.com/v2.6/PAGE_ID/thread_settings?access_token= PAGE_ACCESS_TOKEN 请求设置'欢迎消息'。

但是，我需要先了解user_id请求。

我的问题：

1. 创建欢迎消息'？


2. 当用户打开facebook信使窗口时，如何显示欢迎讯息？

我revi已 https://developers.facebook.com/docs/messenger-platform 文档，以及我仍然有问题。

解决方案

所以你可以用开始按钮。这个按钮只有在用户第一次输入机器人时才会出现。

使用此命令可以设置按钮：

  curl  - X POST -HContent-Type：application / json-d'{
setting_type：call_to_actions，
thread_state：new_thread，
call_to_actions 
 {
payload：USER_DEFINED_PAYLOAD
} 
] 
}'https://graph.facebook.com/v2.6/me/thread_settings ？access_token = PAGE_ACCESS_TOKEN
  

正如您可以看到按钮是否按下您的Webhook收到回发

这是您收到的回调：

  {
发件人：{
id：USER_ID
}，
收件人：{
id：PAGE_ID
}，
timestamp：1458692752478，
postback：{
payload：USER_DEFINED_PAYLOAD
} 
} 
  

所以这是从你可以得到用户id

现在你可以为这个。
我的样子如下：

  function receivedPostback（event）{
 var senderID = event.sender。 ID; 
 var recipientID = event.recipient.id; 
 var timeOfPostback = event.timestamp; 
 
 //'payload'参数是一个开发者定义的字段，它设置在结构化消息的回发
 //按钮中。 
 var payload = event.postback.payload; 
 
 console.log（收到用户％d的回发和带有负载％s的页面％d％$ d，发件人ID，收件人ID，有效载荷，timeOfPostback）; 
 
 
如果（有效负载）{
 
 //当回调被调用时，我们将发送一条消息给发件人
 //让他们知道这是成功的
 switch（payload）{
 case'USER_DEFINED_PAYLOAD'：
 startedConv（senderID）; 
 break; 
 
默认值：
 sendTextMessage（senderID，Postback called）; 
} 
  

我的启动方式（）看起来像这样

  function startedConv（recipientId）{
 var name; 
 
请求（{
 url：'https://graph.facebook.com/v2.6/'+ recipientId +'？fields = first_name'，
 qs：{ access_token：PAGE_ACCESS_TOKEN}，
方法：'GET'
}，function（error，response，body）{
 if（error）{
 console.log（' ：'，error）; 
} else if（response.body.error）{
 console.log（'Error：'，response.body.error）; 
} else {
 name = JSON.parse（body）; 
 sendTextMessage（recipientId，Hello+ name.first_name +，我该如何帮你？）
} 
}）; 
} 
  

I would like to show 'welcome message' like 'Hi Robert, welcome to my application'. So I need to send:

1. "https://graph.facebook.com/v2.6/USER_ID?fields=first_name,last_name,profile_pic,locale,timezone,gender&access_token=PAGE_ACCESS_TOKEN"

2. using 'first_name' from 1st request, send "https://graph.facebook.com/v2.6/PAGE_ID/thread_settings?access_token=PAGE_ACCESS_TOKEN" request to set 'welcome message'.

However, I need to know user_id before first request.

My questions:

1. What are steps to create 'Welcome message'?
2. How to show 'Welcome message', when user opened facebook messenger window?

I reviewed https://developers.facebook.com/docs/messenger-platform document, and I have still questions.

解决方案

So you can make this with a "get started" Button. This button is only there if the User Messages the bot for the first time.

With this command you can set the button:

curl -X POST -H "Content-Type: application/json" -d '{
  "setting_type":"call_to_actions",
  "thread_state":"new_thread",
  "call_to_actions":[
    {
      "payload":"USER_DEFINED_PAYLOAD"
    }
  ]
}' "https://graph.facebook.com/v2.6/me/thread_settings?access_token=PAGE_ACCESS_TOKEN"      

As you can see if the Button is pressed your Webhook recieves a "postback"

this is the callback you get:

{
  "sender":{
    "id":"USER_ID"
  },
  "recipient":{
    "id":"PAGE_ID"
  },
  "timestamp":1458692752478,
  "postback":{
    "payload":"USER_DEFINED_PAYLOAD"
  }
}  

So this is from where you can get User id

Now you can code a Function for this. My looks like this:

function receivedPostback(event) {
  var senderID = event.sender.id;
  var recipientID = event.recipient.id;
  var timeOfPostback = event.timestamp;

  // The 'payload' param is a developer-defined field which is set in a postback 
  // button for Structured Messages. 
  var payload = event.postback.payload;

  console.log("Received postback for user %d and page %d with payload '%s' " + 
    "at %d", senderID, recipientID, payload, timeOfPostback);


  if (payload) {

    // When a postback is called, we'll send a message back to the sender to 
    // let them know it was successful
      switch (payload) {
        case 'USER_DEFINED_PAYLOAD':
          startedConv(senderID);
          break;

       default:
         sendTextMessage(senderID, "Postback called");
       }

My startedConv() looks like this

function startedConv(recipientId){
var name;

request({
          url: 'https://graph.facebook.com/v2.6/'+ recipientId +'?fields=first_name',
          qs: {access_token: PAGE_ACCESS_TOKEN},
          method: 'GET'
      }, function(error, response, body) {
          if (error) {
              console.log('Error sending message: ', error);
          } else if (response.body.error) {
              console.log('Error: ', response.body.error);
          }else{
              name = JSON.parse(body);
              sendTextMessage(recipientId, "Hello "+ name.first_name+", how can i help you ? ")
          }
      });
}

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