• nicholasarehart

• in reply to: Changing Field Name Question
• March 14, 2018 at 10:21 am

@fastvelocity that is not correct, wp_postmeta is what you want to update.

If anyone is still looking for a solution to this you can use something like the code snippet below. It will update post meta when you save ACF field groups. You may want to add additional checks before executing the database updates but for my case its suitable as is.

if (class_exists('acf')) {
  /**
   * Update meta fields on acf field name change
   */
  function update_acf_field_name($data , $postarr)
  {
    global $wpdb;
    $post_id = $postarr['ID'];
    $post_type = get_post_type($post_id);

    if ($post_type !== 'acf-field-group') return $data;

    $prev_fields = acf_get_fields($post_id);

    if (!$prev_fields) return $data;

    if (!array_key_exists('acf_fields', $postarr)) return $data;

    $next_fields = $postarr['acf_fields'];

    foreach ($prev_fields as $prev_field) {
      if (!array_key_exists($prev_field['ID'], $next_fields)) continue;

      $next_field = $next_fields[$prev_field['ID']];

      if ($next_field['name'] === $prev_field['name']) continue;

      // add additional checks here

      $res = $wpdb->update(
        "{$wpdb->prefix}postmeta",
        [ 'meta_key' => $next_field['name'] ],
        [ 'meta_key' => $prev_field['name'] ]
      );
    }

    return $data;
  }

  add_action('wp_insert_post_data', 'update_acf_field_name', 99, 3);
}