从JavaScript向Facebook发表评论 [英] Posting comment to Facebook from JavaScript

问题描述

我有一个Facebook应用程序，一个Facebook页面和一个网站。当有人向我的网站添加评论时，我会从下面的代码中获取评论文字。我想做的是让我的Facebook应用程序在我的Facebook页面上发布相同的评论文本。

这是我在我的网站上的JavaScript代码：

  window.fbAsyncInit = function（）{
 FB.init（{
 appId： drupal_to_js（$ appid），
 status：true，
 cookie：true，
 xfbml：true，
 channelUrl：。drupal_to_js（$ channel_url） b}）; 
 
 FB.Event.subscribe（'comment.create'，function（response）{
 var commentQuery = FB.Data.query（'SELECT text FROM comment WHERE post_fbid = \'' + response.commentID +'\'AND object_id IN（SELECT comments_fbid FROM link_stat WHERE url = \''+ response.href +'\'）'）; 
 
 FB.Data.waitOn （[commentQuery]，function（）{
 var commentRow = commentQuery.value [0]; 
 var commentText = commentRow.text; 
 
 // TODO发表评论文字到Facebook 
}）; 
}）; }; 
  

解决方案

经过广泛的搜索，这里是答案谁在寻找它请阅读代码中的意见，他们会给你更多的信息。

  window.fbAsyncInit = function（）{
 FB.init（{
 appId：。drupal_to_js（$ appid）。，
 status：true，
 cookie：true，
 xfbml：true，
 channelUrl：。drupal_to_js（$ channel_url）。
}）; 
 
 FB.Event.subscribe（'comment.create'，function（response）{//创建注释时触发
 var commentQuery = FB.Data.query（'SELECT fromid，text FROM comment WHERE post_fbid = \''+ response.commentID +'\'AND object_id IN（SELECT comments_fbid FROM link_stat WHERE url = \''+ response.href +'\'）'）; 
 var userQuery = FB.Data.query（'SELECT name FROM user WHERE uid in（select fromid from {0}）'，commentQuery）; 
 
 FB.Data.waitOn（[commentQuery，userQuery]， function（）{
 var commentRow = commentQuery.value [0]; 
 var userRow = userQuery.value [0]; 
 
 var commentText = commentRow.text; 
 var commentUsername = userRow.name; 
 
 //调用此函数向Facebook发送Ajax请求
 post_to_fb（commentText，commentUsername，response.href）; 
}） ; 
}）; }; 
 
 //此功能将发布到具有ID $ fb_page_id的Facebook页面。 
 //帖子格式是这样的，[NAME说：] POST例如：[ObyYou说：]这是一个测试。 
 //当然，您可以按照所需的方式更改格式。 
 //您必须拥有访问权限才能在该页面上发布权限。 
 //使用这个答案底部的两个站点来帮助（记住，如果你要硬编码访问令牌，你必须创建一个永久访问令牌）。 
 //注意一些变量和函数是PHP，因为我的JavaScript代码是
 //实际上在一个PHP文件中。 
 function post_to_fb（commentText，commentUsername，commentLink）{
 var strURL ='https://graph.facebook.com/。$ fb_page_id。/ feed'; 
 var params ='link ='+ commentLink +'& message = ['+ commentUsername +'+说：] +'+ commentText +'& access_token =$ fb_page_access_token。 
 
 var xmlHttpReq; 
 xmlHttpReq = new XMLHttpRequest（）; 
 xmlHttpReq.open（'POST'，strURL，true）; 
 xmlHttpReq.setRequestHeader（'Content-type'，'application / x-www-form-urlencoded'）; 
 xmlHttpReq.send（params）; 
} 
  

创建一个（永久）access_token：

http://www.testically.org/2011/09/27/5-steps-to-automatically-write-on- your-facebook-page-wall-using-the-graph-api-without-a-logged-in-user /

I have a Facebook application, a Facebook page and a website. When someone adds a comment to my website, I retrieve the comment text from the code below. What I want to do after that is to let my Facebook application post the same comment text to my Facebook page.

This is the JavaScript code I have so far on my website:

 window.fbAsyncInit = function() {
     FB.init({
         appId: " . drupal_to_js($appid) . ",
         status: true,
         cookie: true,
         xfbml: true,
         channelUrl: " . drupal_to_js($channel_url) . "
     });

     FB.Event.subscribe('comment.create', function(response) {
        var commentQuery = FB.Data.query('SELECT text FROM comment WHERE post_fbid=\'' + response.commentID + '\' AND object_id IN (SELECT comments_fbid FROM link_stat WHERE url=\'' + response.href + '\')');

        FB.Data.waitOn([commentQuery], function () {
            var commentRow = commentQuery.value[0];
            var commentText = commentRow.text;

            //TODO Post commentText to the Facebook page.
        });
     });  };

解决方案

After an extensive search, here is the answer for those who are looking for it. Please read the comments inside the code, they will give you more information.

window.fbAsyncInit = function() {
    FB.init({
        appId: " . drupal_to_js($appid) . ",
        status: true,
        cookie: true,
        xfbml: true,
        channelUrl: " . drupal_to_js($channel_url) . "
    });

    FB.Event.subscribe('comment.create', function(response) {  //trigger when comment is created
        var commentQuery = FB.Data.query('SELECT fromid, text FROM comment WHERE post_fbid=\'' + response.commentID + '\' AND object_id IN (SELECT comments_fbid FROM link_stat WHERE url=\'' + response.href + '\')');
        var userQuery = FB.Data.query('SELECT name FROM user WHERE uid in (select fromid from {0})', commentQuery);

        FB.Data.waitOn([commentQuery, userQuery], function () {
          var commentRow = commentQuery.value[0];
          var userRow = userQuery.value[0];

          var commentText = commentRow.text;
          var commentUsername = userRow.name;

          //Call this function to send an Ajax request to Facebook.
          post_to_fb(commentText, commentUsername, response.href);
        });
    }); };

//This function will post to a Facebook page that has the ID $fb_page_id.
//The post format is like this, [NAME said:] POST e.g: [ObyYou said:] this is a test.
//Of course, you can change the format the way you want.
//You have to have an access key to have the permission to post on that page.
//Use the two sites at the bottom of this answer for help, (remember if you
//want to hard-code the access token, you have to create a permenant access token).
//Note that some variables and functions are PHP, since my JavaScript code is
//actually inside a PHP file.
function post_to_fb(commentText, commentUsername, commentLink) {
    var strURL = 'https://graph.facebook.com/" . $fb_page_id . "/feed';
    var params = 'link=' + commentLink + '&message=[' + commentUsername +'+said:]+' + commentText + '&access_token=" . $fb_page_access_token . "';

    var xmlHttpReq;
    xmlHttpReq = new XMLHttpRequest();
    xmlHttpReq.open('POST', strURL, true);
    xmlHttpReq.setRequestHeader('Content-type','application/x-www-form-urlencoded');
    xmlHttpReq.send(params);
}

Create A (permanent) access_token:

http://www.testically.org/2011/09/27/5-steps-to-automatically-write-on-your-facebook-page-wall-using-the-graph-api-without-a-logged-in-user/

http://php-academy.blogspot.com/2011/04/how-to-post-from-facebook-app-to.html

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