Adding OpenGraph tags to your theme or site

Feb 22, 2017

The following code will help you site when you are shareing your site on facebook and twitter.

Place this code in the header of everypage.

My theme uses a include called head.php in the elements folder. By adding the following code you will get different infomation for each page.

    <?php
    $siteName = Config::get('concrete.site'); //Gets Name of the site
    $page = Page::getCurrentPage(); 
    $title = $page->getCollectionName(); //Gets the title of the page
    $description = $page->getCollectionAttributeValue('meta_description'); //Gets the meta description of the page
    $url = $page->getCollectionLink();//Gets the URL of the page
    ?>


    <!-- Open Graph -->
    <!-- This is facebooks default app ID, it stops facebook showing errors in the debugger below -->
    <meta property="fb:app_id" content="966242223397117" />
    <meta property="og:site_name" content="<?php echo $siteName  ?>"/>
    <meta property="og:title" content="<?php echo $title ?>"/>
    <meta property="og:description" content="<?php echo $description ?>"/>
    <meta property="og:url" content="<?php echo  $url ?>"/>


    <meta name="twitter:card" content="summary" />
    <meta name="twitter:title" content="<?php echo $siteName ?>" />
    <meta name="twitter:description" content="<?php echo $description ?>" />
    <meta name="twitter:url" content="<?php echo  $url ?>" />
    <!-- You make an iamge and upload on your site which will always so for facebook and twitter when your page is shared. -->
    <meta property="og:image" content="http://www.yoursite.com/images/facebookimage.jpg"/>
    <meta name="twitter:image" content="http://www.yoursite.com/images/twitterimage.jpg" />

You can now test your code and see what results you get. For Facebook: https://developers.facebook.com/tools/debug/og/object/

Click the "Fetch new scrape information" button

For Twitter https://cards-dev.twitter.com/validator

I have expanded on this code to add images for each page, which i will try and update soon.

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