ProStone on "Rewrite Attachments Page URL"

Hi,
how can i change Attachment Pages URL to something like this
example.com/photos/attachment_ID/post_name/attachment_name
currently I added on functions.php file the following code

function wpd_attachment_link( $link, $post_id ){
    $post = get_post( $post_id );
    return home_url( '/photos/' . $post->ID . $post->post_name );
}
add_filter( 'attachment_link', 'wpd_attachment_link', 20, 2 );

source
but it is showing me as domain.com/photos/Attachment_IDattachment_name
thank you