Nofollow for Links in Shop-Sidebar

Hi! I am using Botiga for a few weeks now and after going live with the website I noticed the google web crawler bringing heavy load to my website. I am speaking of a website with 150 pages according to the sitemap and 30.000 different URLs crawled by google per day! What happend?

I use the Shop Sidebar with a lot of widgets of type “Botiga – Filter products by attribute”. Each widget creates links to the shop-page with the filters as URL-parameters of type /shop/?filter_xxx=yyy&query_type=or&filter_zzz=aaa . With more then ten filterable attributes in the sidebar, the combination leads to thousands of different links.

I solved the issue with a script that adds rel="nofollow" to all links with url parameters.

Question: Is there any other solution directly integrated in Botiga?

Here is the code I used (credits to perplexity.ai):

function add_nofollow_to_parameterized_links() {
    ?>
    <script>
    document.addEventListener('DOMContentLoaded', function() {
      var links = document.getElementsByTagName('a');
      for (var i = 0; i < links.length; i++) {
        if (links[i].href.indexOf('?') > -1) {
          links[i].classList.add('url-parameter-link');
        }
      }
    });

    jQuery(document).ready(function($) {
      $('.url-parameter-link').attr('rel', 'nofollow');
    });
    </script>
    <?php
}
add_action('wp_footer', 'add_nofollow_to_parameterized_links');