Use image from view as Open Graph image on front page

Cross-posting from Reddit in case anyone stumbles across this and wants to do the same thing. zad370 answered my question.

So basically, you want to insert the following meta tag in your front page's header:

<meta property="og:image" content="http://www.example.com/images/some_daily_image.jpg" />

If you haven't enabled the PHP Filter module, please enable that first. Download and enable Image URL Formatter module.

Go to your Daily Photo view and under Fields, add field_daily_photo again. Select Exclude from display option. Make sure you change the Formatter option to Image URL.

Now go to the Header portion of the view, and add a new Global: Text Area field. Change Text Format to PHP Code and check "Use replacement tokens from the first row" option. Insert the following PHP code:

$element = array(
  '#tag' => 'meta',
  '#attributes' => array(
    'property' => 'og:image', 
    'content' => '[field_daily_photo_1]',
  ),
);
drupal_add_html_head($element, 'og-image');