Reply To: Trying to Add ACF Custom Field to Page Source Meta at the top For SEO

• John Huebner

• September 13, 2021 at 3:52 pm

add_action('wp_head', 'product_details_meta');
function product_details_meta() {
  // get the queried object
  $queried_object = get_queried_object();
  // see if it's a post
  if (!is_a($queried_object, 'WP_POst')) {
    // not a post
    return;
  }
  // set $post_id
  $post_id = $queried_object->ID;
  // check post type
  if (get_post_type($post_id) != 'product') {
    // not a product
    return;
  }
  // use $post_id to get ACF field values
  if (get_field('gtin', $post_id)) {
    ?><meta property="GTIN" content="<?php the_field('gtin', $post_id); ?>" /><?php 
  }
}