Facebook Open Graph publish action with object - facebook

Question

I'm working on publishing stories with Facebook Open Graph, for this I'm using their JS SDK. Docs is here : https://developers.facebook.com/docs/opengraph/overview
So the point is to publish for a user : John Smith is listening Shakira - Lalala on Mywebsite.
listening is the action
Shakira is the object
The JS code would be:
FB.api(
'me/mynamespace:listen',
'post',
{
song: "http://mywebsite/shakiramusic"
},
function(response) {
// handle the response
}
);
In this page, some others informations will be specified with code like this:
<meta property="og:title" content="Lalala" />
<meta property="og:image" content="wonderShakira.jpeg" />
But, here is my problem. Imagine that I would like to make a Stories like :
John Smith is reading page 542 from a BigBook on mywebsite
The page number is highly variable and so can't be stock in meta property because Facebook won't refresh it in time.
So I would like making something like that:
FB.api(
'me/mynamespace:reading',
'post',
{
object:{
app_id: 1234567890,
type: "book",
url: "http://mywebsite/thebigbook
title: "The Big Book"
image: "bigbookcover.png",
description: "A super book",
** page_count:542 **
}
},
function(response) {
// handle the response
}
);
But of course it's not working and i get an error. May be i misunderstand the principe of custom stories, actions and objects... I hope my problem is clear and you'll be able to help me.
Thanks :)

Answer 1

I got the answer, here is the good code:
FB.api(
'me/mynamespace:reading',
'post',
{
book:{
app_id: 1234567890,
type: "book",
title: "The Big Book"
image: "bigbookcover.png",
description: "A super book",
url: "http://mywebsite/thebigbook
page_count:542
}
},
function(response) {
// handle the response
}
);
There is two things to consider:
you need to send an object call book for reading and you need to put the url parameter in last, otherwise, Open Graph will get the value in the meta tag. If you put it last, OG will take the parameter that you send.