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copied!<p>Actually <code>mikeonrails</code> gave a correct link - the Requests dialog is <em>the</em> way to invite friends to your app and send them other types of requests. It <em>does</em> require user interaction though (just as the video shows), for requests sent to users who don't have the application installed.</p> <p>And now for the details. There are 2 types of requests that you can send:</p> <ul> <li>user-generated requests: these can be sent to users who don't have the application installed (ie. application invite). They can <em>only</em> be sent using the Javascript SDK (or the iOS or Android SDKs but I don't think you're interested in those) and they <em>do</em> require user interaction. It will consist of a pop-up that will either display a selection (made by you) of his friends or a friend selector and a send button to send them your message.</li> <li>app-generated requests: these can <em>only</em> be sent to users who have the application installed, but can be sent without user interaction.</li> </ul> <p>The code for user-generated requests is like this (using the Javascript SDK):</p> <pre><code>// this will show the pop-up dialog with a friend selector // add a `to: 'friend_id1,friend_id2` to skip the friend selector FB.ui({ method: 'apprequests', message: 'My Great Request' }, requestCallback); </code></pre> <p>For the app-generated requests you can use Koala like this:</p> <pre><code>user = Koala::Facebook::API.new(user_token) user.put_object("user_with_app_installed_id", "apprequests", {:message => "Would you like to be friends?") </code></pre> <p>So, the conclusion is that you cannot invite a user's friends to your application without his approval, but you can make it really simple for him to do it (2 clicks).</p> <p>If you'd like to read more:</p> <ul> <li>Requests Dialog: <a href="http://developers.facebook.com/docs/reference/dialogs/requests/" rel="noreferrer">http://developers.facebook.com/docs/reference/dialogs/requests/</a></li> <li>Social Channels: <a href="http://developers.facebook.com/docs/channels/#requests" rel="noreferrer">http://developers.facebook.com/docs/channels/#requests</a></li> </ul>

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