Question

I’m stuck with sharing and commenting Facebook posts from my website.

Look.
In Twitter we can reply a tweet simply by a link

https://twitter.com/intent/tweet?in_reply_to=35782000644194304

or

we can retweet the tweet by this link

https://twitter.com/intent/retweet?tweet_id=35782000644194304

it’s so easy, after clicking you redirecting to twitter where you can do this, and i like it.

With facebook posts it is not so easy.
I have Facebook posts (copies of posts, i parsed them before and saved to my DB, ID of that posts I saved too) at my website and I’d like to share/comment/like this posts. Maybe Facebook have the links like twitter, or some another way to do it, I don’t know, but i spend all day to find solution and I failed.

Maybe it is possible to create links like this:

http://facebook.com/ID_OF_THAT_FB_POST/share
or
http://facebook.com/ID_OF_THAT_FB_POST/comment

and.. after clicking the link, it redirects to facebook page, where you can share this post or comment?

Answer 1

Well let me see if I understand, If you want to SHARE/COMMENT/LIKE a post on Facebook, from your website then you can use the Graph API, POST, connection section.
https://developers.facebook.com/docs/reference/api/post/

This allows you to create a comment and a like, having the right access_token and the stream_publish permission.

Create:
You can write to the POST_ID/comments connection to post a comment to the post by issuing an HTTP POST request with the publish_stream permission and following parameters.

So you have yo make an HTTP POST request to http://graph.facebook.com/POST_ID/comments?message=HELLO+WORLD&access_token=YOUR_ACCESS_TOKEN

same thing for the like:

make an HTTP POST request to http://graph.facebook.com/POST_ID/likes?access_token=YOUR_ACCESS_TOKEN

with Javascript SDK would be something like this :

var postID='POST_ID';
var msg = 'Comment this post';
FB.api('/'+postID+'/comments', 'post', { message: msg }, function(response) {
  if (!response || response.error) {
    alert('Error occured');
  } else {
    alert('Post ID: ' + response.id);
  }
});

If you want to share the there is no API documentation for that, but you can use something like this:

<script type="text/javascript">
function sharePost(){
 var page = 'https://www.facebook.com/permalink.php?story_fbid=POST_ID&id=PAGE_ID';
 var sharer= 'https://www.facebook.com/sharer/sharer.php?u='+encodeURIComponent(page);
 var w=660;
 var h=460;
 var sTop=window.screen.height/2-(h/2);
 var sLeft=window.screen.width/2-(w/2);
 var sharer= window.open(sharer,"Share","status=1,height="+h+",width="+w+",top="+sTop+",left="+sLeft+",resizable=0");
 return false;
}
</script>

<a onclick="sharePOST()">SHARE POST</a>