Anes,
I don't know RSForms well enough to tell you how to automatically populate it's content. You can get information about a Facebook user with the following code. Filling that into RSForms is something you'd need to ask them for though:
$jfbcLibrary = JFBConnectFacebookLibrary::getInstance();
$fbUserId = $jfbcLibrary->getFbUserId();
$fields = array(0 => 'first_name', 1 => 'last_name', 2 => 'status', 3 => 'email', 4 => 'name');
$profile = $this->getUserProfile($fbUserId, $fields);You can add as many fields to the $fields array as you want, but they must be ones that are supported by Facebook. Additionally, you'll need to have already had the user login to your site so that they've given permission for you to fetch their profile and get the information you're looking for.
Generally, in these cases, we'd recommend using something like JomSocial or Community Builder. With those, you can import the user's information into their profile on login using our profile plugins. If you don't do that, you'll need to investigate how to do the custom coding to pre-populate the RSForm you're trying to use.
Hope that helps get you started, but if you have other questions, just let us know!
Thanks,
Alex
Auto fill information in Rsforms
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