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POAuthentication and OpenGraph
 

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    <p>this is my first attempt playing around with facebook apps and OpenGraph. I've followed the example at developers.facebook.com. So far, so good.</p> <p><strong>What I am trying to do though is:</strong> When clicking a certain image, check so that the user is logged and have authenticated your app. I want the user to be able to use the page without going through authentication. Only one specific action (clicking that image) requires that the user authenticate.</p> <ol> <li>If the user is logged in and have authenticated your app then publish a message on the user's stream.</li> <li>If the user is not logged in and/or have not authenticated your app show the authentication dialog if the user clicks on the image. Once accepted, post a message on the user's stream.</li> </ol> <p><code>&lt;a onclick="fb_login();" href="#" class="productlink1"&gt;&lt;img id="product1" onclick="postCook()" alt="" src="img/fressko_heart_black.png"/&gt;&lt;/a&gt; &lt;a class="productlink2"&gt;&lt;img id="product2" alt="" src="img/fressko_checked_black.png"/&gt;&lt;/a&gt;</code></p> <p>I know this is not the ultimate piece of code, especially as it has two onclick="" that will trigger at the same time. So, I need a different solution to that.</p> <p>The JavaScript function to post on the user's feed looks like this:</p> <pre><code> function postCook() { FB.api( '/me/xxxxxx:cook', 'post', { recipe: 'http://www.zzzzzzz.com/test/' }, function(response) { if (!response || response.error) { alert('Error occured'); } else { alert('Cook was successful! Action ID: ' + response.id); } }); } </code></pre> <p>The JavaScript to authenticate the user looks like this:</p> <pre><code>window.fbAsyncInit = function() { FB.init({ appId : 'xxxxxx', oauth : true, status : true, // check login status cookie : true, // enable cookies to allow the server to access the session xfbml : true // parse XFBML });}; function fb_login(){ FB.login(function(response) { if (response.authResponse) { console.log('Welcome! Fetching your information.... '); //console.log(response); // dump complete info access_token = response.authResponse.accessToken; //get access token user_id = response.authResponse.userID; //get FB UID FB.api('/me', function(response) { user_email = response.email; //get user email // you can store this data into your database }); } else { //user hit cancel button console.log('User cancelled login or did not fully authorize.'); } }, { scope: 'publish_stream' }); }(function() { var e = document.createElement('script'); e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; e.async = true; document.getElementById('fb-root').appendChild(e);}()); </code></pre> <p>Does anyone have any good solution to my problem? Or a kick in the right direction. I prefer using PHP usually, but for this mission JavaScript seems to be the weapon of choise.</p> <p>Regards,</p>
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