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POHow to authorize Facebook app using redirect in canvas?
 

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  1. POHow to authorize Facebook app using redirect in canvas?
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    <p>I'm trying to get into making Facebook apps but I'm having trouble getting authorization working in a redirect scheme inside the canvas.</p> <p>Using the javascript api, I got it working pretty easily in a popup scheme:</p> <pre><code>$("#loginButton").click(function(e) { FB.login(function(response) { if (response.perms) { perms(); } }, {perms : 'publish_stream'}); </code></pre> <p>But the popup should be an unnecessary extra click, because every other application I see requests the authorization before even showing you the landing page. Like this:</p> <p><a href="https://i.imgur.com/yBGzL.png" rel="nofollow noreferrer">http://i.imgur.com/yBGzL.png</a></p> <p>I figure they're simply using a redirect scheme. So I spent the entire day trying the different ways I could find:</p> <pre><code>header("Location: https://graph.facebook.com/oauth/authorize?client_id=" . $gAppId . "&amp;redirect_uri=" . urlencode($gUrl) . "&amp;perms=publish_stream"); header("Location: http://www.facebook.com/login.php?v=1.0&amp;api_key=" . $gApiKey . "&amp;next=" . urlencode($gUrl) . "&amp;canvas="); header("Location: http://www.facebook.com/connect/uiserver.php?app_id=" . $gAppId . "&amp;next=" . urlencode($gUrl) . "&amp;return_session=0&amp;fbconnect=0&amp;canvas=1&amp;legacy_return=1&amp;method=permissions.request"); </code></pre> <p>But all of them, instead of showing the authorization request stuff, show a link like this:</p> <p><a href="https://i.imgur.com/bLwPQ.png" rel="nofollow noreferrer">http://i.imgur.com/bLwPQ.png</a></p> <p>Hilariously, if I open the iframe's address in a new tab, I get the authorization request like I wanted. But I want it to display immediately, without an extra click, like every other app.</p> <p>Here's an example of an app that is doing authorization and requesting permissions all in one go, in redirect form, before even displaying the landing page:</p> <p>www.facebook.com/send.fortune.cookies</p> <p>How are they doing it?</p>
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