comment Parse URL parameters manually
  assign full_url = canonical_url | default: request.path
  if full_url contains '?'
    assign query_string = full_url | split: '?' | last
    assign params = query_string | split: '&'
    for param in params
      assign key_value = param | split: '='
      if key_value[0] == 'group_id'
        assign search_group_id = key_value[1]
        break
      endif
    endfor
  endif
-%}

{
  "group_id": "",
  "products": []
}