ACF for Open Graph Image

• Rob

• July 17, 2020 at 7:20 am

I’m attempting to use ACF for the featured image and open graph image for a custom taxonomy I’ve set up. Adding and applying the custom field to the taxonomy was easy. But trying to create something to go in my functions has been a bit more challenging for me.

The custom taxonomy is “brands”, and it’s used as an identifier on regular ol’ pages. No custom post type.

This is what I have so far…

add_action('wp_head', 'rjrasmussen_brand', 5);
function rjrasmussen_brand( ) {
    // If it's not a taxonomy, die.
    if ( !is_tax('brands') ) {
        return;
    }
    if (get_field('featured_image', $post->ID)) {
        $image = base_image_url(get_field('featured_image', $page->ID), null); 
    }
    echo '<meta property="og:image" content="'.$image.'" />';
}

The echo works fine, but nothing is getting passed to the content.

Any thoughts or suggestions to get me going? Maybe there’s a far better solution out there that I just couldn’t locate?

Huge pre-emptive thank you! 🙂

• John Huebner

• August 4, 2020 at 4:30 am

$page->ID is never set and $post->ID has no value inside of your function.

add_action('wp_head', 'rjrasmussen_brand', 5);
function rjrasmussen_brand( ) {
    // If it's not a taxonomy, die.
    if ( !is_tax('brands') ) {
        return;
    }
    global $post;
    if (get_field('featured_image', $post->ID)) {
        $image = base_image_url(get_field('featured_image', $post->ID), null); 
    }
    echo '<meta property="og:image" content="'.$image.'" />';
}