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

• inaka

• September 13, 2021 at 3:06 pm

Hi John,

Thanks so much for your time on this. I replaced the “// your code to output meta tags here” with the code above, and the following code was my block of text added to the functions.php of my child theme:

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
  $value = get_field('gtin', $post_id);
  if (get_field('gtin', $post_id)) {
  ?>
  <meta property="GTIN" content="<?php the_field(gtin', $post_id);?>" />
  <?php 
}

Sadly, it threw up a critical error on all pages of my site when I included this.

If you happen to see anything glaring that I mistakenly did with the code above, please let me know. Once again, thanks for your time and your help is greatly appreciated. Thanks again.