@user.route('/download-batch', methods=["GET", "POST"])
@login_required
def download_batch():
    start = request.args.get('start')
    end = request.args.get('end')

    code_list = get_code_list_by_series(start, end)
    headers = get_batch_headers()
    print(headers)
    print(code_list)
    print(len(code_list))
    download_csv(code_list=code_list, header=headers, filename=f"Batch_{start}_{end}")
    return redirect(url_for("user.batch_requests"))