Facebook: how preload FQL works?

Question

On "Advanced" tab of my app settings I've seen "Preload FQL" option with description "Facebook will send the result of these FQL queries as JSON-encoded POST parameters to your Canvas URL". I set it:

{
"test": {
"pattern": ".*",
"query": "SELECT uid2 FROM friend WHERE uid1 = {*user*}"
}
}

but it doesn't post anything related into my app. I tried many ways but not successfully. Could someone point me out what did I do wrong?

Answer 1

I found the answer by myself: preload FQL isn't supported in the new API. Detailed here: http://github.com/facebook/php-sdk/issues/issue/175