acf

gistfile1.txt

<?php

/**
 * Save Work ID
 *
 * Save work ID on the fly when adding new post.
 *
 * @param string $post_id Post ID.
 *
 * @return array $_POST Post Data.
 */
function prh_save_workid( $post_id ) {

	if ( 'post' !== get_post_type( $post_id ) ) {
		return;
	}

	$field_name = 'blogpost_bookcontent_repeater';

	$value = get_field( $field_name, $post_id );


	$new_array = [];

	if ( ! is_array( $value ) ) {
		return $value;
	}
	foreach ( $value as $repeater ) {


		if ( ! $repeater['link_family'] ) {
			$new_array[] = $repeater;
			continue;
		}
		$title    = new \PRHAPI\Requests\Data\Titles( $repeater['blogpost_bookisbn_text'] );
		$response = $title->get_response_body();


		$repeater['work_id'] = $response->data->titles[0]->workId;;
		$new_array[] = $repeater;

	}

	update_field( $field_name, $new_array, $post_id );

}

add_action( 'acf/save_post', 'prh_save_workid', PHP_INT_MAX );