Profile: Lara

Problem: I have a repeating custom field in a custom post type. When submitting a Form that creates this custom post type, I would like to create a cloned post that copies the values from the repeating custom field and inserts them automatically in the post clone.

Solution: Use wp_insert_post in a cred_save_data hook to create a clone of the original post. Get the repeating field value from the $_POST superglobal, and loop over those values in a foreach loop, or other similar loop structure. Use add_post_meta to insert each value into the custom field in the cloned post.

add_action('cred_save_data', 'my_save_data_action',10,2);
function my_save_data_action($post_id, $form_data) {
  $forms = array( 123 );
  if ( in_array( $form_data['id'], $forms ) )
  {
    $gallery = $_POST['wpcf-fieldslug'];
    $new_book_args = array(
      'post_title' => 'cloned book test from ' . $post_id,
      'post_status' => 'publish',
      'post_type' => 'book'
    );
 
    // Insert the cloned post into the database
    $new_book_id = wp_insert_post( $new_book_args );
     
    foreach( $gallery as $img ){
      add_post_meta($new_book_id, 'wpcf-fieldslug', $img, false);
    }
  }
}

Relevant Documentation:
https://toolset.com/documentation/programmer-reference/cred-api/#cred_save_data
https://developer.wordpress.org/reference/functions/wp_insert_post/
https://developer.wordpress.org/reference/functions/add_post_meta/