Getting attachments from Facebook conversations - facebook

Question

I currently use the Facebook Graph API to get a inbox conversation. Most of the messages look like this:
{
"id": "1452301718360191_1407164668",
"from": {
"id": "10203840837848742",
"name": "Øyvind Knobloch-Bråthen"
},
"message": "Some message",
"created_time": "2014-08-04T15:04:28+0000"
}
However, some of the messages in the conversation are images, and they are represented like this:
{
"id": "1452301718360191_1407164668",
"from": {
"id": "10203840837848742",
"name": "Øyvind Knobloch-Bråthen"
},
"created_time": "2014-08-04T15:04:28+0000"
}
So basically what is different is that the message is gone. But since there is no mention of the attachment, or url to the image or anything else I can use, I'm not able to display the image in my app.
So my question is: How can I get a hold of the image (or url to the image). Hopefully it will be available in some way when I have the message ID.

Answer 1

With Graph api V2 the egde to retrieve inbox messages is /id/conversations
id is eitheir a user id or a page id
Each conversation message with attachment should return an "attachments" field.
Then for each message with attachment you should query the url https://api.facebook.com/method/messaging.getattachment?mid=message_id&access_tokes=your_access_token
Note that it does not work with graph api v2.1. Unless you curl the query