Reply To: adding a custom field to media attachment

• djcottrell

• October 12, 2018 at 1:05 pm

I have not tested this all out but it should work for you.

With a custom field image

<?php
$image = get_field('image');
$custom_image_url = get_field('customURL', $image['ID']);?>
<img src="<?php echo $image['url']; ?>" alt="<?php echo $image['alt']; ?>" data-attr="<?php echo $custom_image_url;?>" />

With a featured image

<?php
$url = get_the_post_thumbnail_url( $post->ID );
$thumbnail_id = get_post_thumbnail_id( $post->ID );
$custom_image_url = get_field('customURL', $thumbnail_id);
$alt = get_post_meta($thumbnail_id, '_wp_attachment_image_alt', true);
?>
<img src="<?php echo $url; ?>" alt="<?php echo $alt;?>" data-attr="<?php echo $custom_image_url;?>" />