Facebook graph API: get the “subcomments” in a tree of a discussion

问题

I am trying to download a Facebook discussion using the graph API. The problem is: the discussion is located in a page, and in a tree-style manner, meaning that there are two types of comments: "main" comments, to the first message, and "subcomments" to the main comments themselves.

It seems that the graph result only shows the "main" comments and doesn't show the subcomments. Here's an example of a comment it returns:

{
  "id": "53526364352_1574091", 
  "can_remove": false, 
  "created_time": "2014-02-05T10:46:37+0000", 
  "from": {
    "name": "Main commenter", 
    "id": "5345353"
  }, 
  "like_count": 163, 
  "message": "I am a main comment", 
  "user_likes": false
},

There is no link or whatever to the subcomments of this main comment (and there are many).

Is there a way to get the subcomments?

回答1:

If 10101140614002197_8831228 is an ID of a root comment, then you can check for subcomments/replies by requesting COMMENT_ID/comments.

For example:

the root comment: http://graph.facebook.com/10101140614002197_8831228
the subcomment: http://graph.facebook.com/10101140614002197_8831228/comments
this root comment has no subcomments so the data list is empty: https://graph.facebook.com/10101140614002197_8831286/comments

回答2:

You can use field expansion (curly parenthesis in url) to get nested data

http://graph.facebook.com/{object-id}/comments?fields=id,message,comments{id,message,comments{id,message,comments}}

More info here in the section labeled Nested requests (a.k.a. field expansion).

来源：https://stackoverflow.com/questions/22280955/facebook-graph-api-get-the-subcomments-in-a-tree-of-a-discussion

标签

facebook-graph-api