<div class="form-check form-check-inline">
                        <input type="checkbox" th:field="${search.titleIncl}" />
                        <label class="form-check-label" th:for="${#ids.next('covered')}">Title</label>
                    </div>

@GetMapping(value = Utils.MAPPING_INDEX)
public ModelAndView index(@RequestParam("titleIncl") Optional<Boolean> titleIncl) {
    ...calling fillSearch inside of body....
}


private Search fillSearch(Optional<Boolean> titleIncl..) {

        Search search = new Search();

        //Get seach value if nothing provided give me default.
        search.setTitleIncl(titleIncl.orElse(search.isTitleIncl()));
        ...

        return search;
}