Using Facebook PHP SDK with Javascript SDK

Question

I have the following code:

    <?php if (!$user) { ?>
    <div class="fb-login-button" data-perms="email,user_birthday,publish_stream">Login with Facebook</div>
<?php } else { ?>

    Your user profile is
    <pre>
    <?php //print htmlspecialchars(print_r($user_profile, true)) ?>
    </pre>
    <?php echo $user_profile['name']; ?>

    <?php

    try{
        $data = array("message" => "Hello Woghfd!");
        $status = $facebook->api("/me/feed", "POST", $data); 
    }catch(FacebookApiException $e) {
        $login_url = $facebook->getLoginUrl( array(
                       'scope' => 'publish_stream'
                       )); 
        echo 'Please <a href="' . $login_url . '">login.</a>';
        error_log($e->getType());
        error_log($e->getMessage());
    }


    ?>
<?php }

I am using both JS and PHP SDK's... JS to log the users in, and PHP to get their info (experimental at the moment). My problem is that I have used the PHP to POST the data to the users FB feed, and it kept throwing an error if the user wasnt logged in.

I have solved the problem by using a try catch scenario to try and send the data to facebook, but if it fails, instead of throwing an error, it just asks the user to login with the PHP getLoginUrl finction.

Is this the best way to go about doing this? Or would you usually wrap this POST to feed functionallity in a onClick function or something?

Just asking because I think Im getting to grips with the whole thing and need to know if I am going in the right direction.

Thanks :)

IOrlandoni · Accepted Answer · 2012-03-07 21:01:19Z

2

The wireframe I usually use is based on two pages:

Index -> Page with login/start/go button. This button should trigger the JS SDK's login, catch the auth event, and redirect to the next page.

Main -> This page fetches the session that is already started by the index, if no session is available, it redirects to the index. It uses the session to do whatever the app needs to do with the facebook connection.

answered Mar 7, 2012 at 21:01

IOrlandoni

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5 Comments

JamesG Over a year ago

Ok thanks for the reply. I did consider this, but I would like it so the page doesnt need to re-direct? Like so its automatic.. can this way be automatic??

IOrlandoni Over a year ago

You mean do both things at the same time? Login and get the info?

JamesG Over a year ago

No... it turns out ive found exactly what I want... basically I wanted it "AJAXified" so there are no reloading of pages or switching pages. I found a tutorial online which is perfect... follow this link please let me know what you think.

JamesG Over a year ago

Also, am I right in saying... with the approach outlined in the link, the JS SDK sets up the auth, while the PHP SDK gets the access Token to validate the user, allowing the PHP API calls to work (as in my opinion it makes more sense to call API requests through PHP. Thanks

IOrlandoni Over a year ago

Yes, you are correct. The PHP SDK would "automagically" fetch the session that JS started. Sometimes you have session/cookie issues in IE, which would be fixed by a p3p header.

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