Signed request not available in Facebook app on submitting form?
Question
I am developing a Facebook application for use on page. It's essential a page with a web form that then creates a database record form the submitted data. Nothing too complex. The complexity comes when I try to differentiate between the sites when handling the post data. This is what I have:
<?php
require_once('../lib/facebook.php');
$facebook = new Facebook(array(
'appId' => 'xxxxxxxxxxxxxxx',
'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
'cookie' => true
));
$signed_request = $facebook->getSignedRequest();
switch ($signed_request['page']['id']) {
case '144778562245193':
define('SITE_ID', '3');
define('SITE', 'UK Boxing Events');
define('DOMAIN', 'ukboxingevents.com');
define('BODY_CLASS', 'boxing');
break;
case '147183265335890':
define('SITE_ID', '1');
define('SITE', 'UK Wrestling Events');
define('DOMAIN', 'ukwrestlingevents.com');
define('ANALYTICS_ID', 'UA-xxxxxxx-xx');
define('BODY_CLASS', 'wrestling');
break;
case '157856417600021':
define('SITE_ID', '2');
define('SITE', 'UK MMA Events');
define('DOMAIN', 'ukmmaevents.com');
define('BODY_CLASS', 'mma');
break;
default:
die('Invalid page.');
break;
}
if (isset($_POST['add_event'])) {
// submit handler; writes to database
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Add Event</title>
</head>
<body>
<form action="" method="POST" id="add_event_form">
...
</form>
</body>
</html>
The page displays fine on the individual applications, as can be seen at http://www.facebook.com/ukwrestlingevents?sk=app_162023107185208 . However, when I submit the form I get the "Invalid page." output as is the default case in my switch statement; as though there is no signed request present when a form is submitted, even though I thought the default request method used by Facebook was indeed POST and not GET.
Any ideas?
2 answers
solution1
10 2011-05-13 13:45:40
This is just an educated guess, but I think you must include the signed request as a hidden field in order to pass it on after you POST the form...
So:
<input type="hidden" name="signed_request" value="<?php print htmlentities($_REQUEST['signed_request']); ?>">
...should work...
solution2
0 2011-04-05 01:35:50
如果您在action =“”方法中键入您的页面名称，表单将被发布到您的php页面内，而不是您从浏览器中查看的Facebook页面。
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