public ActionResult Index(PagerParameters pagerParameters, string q = "") {
            Pager pager = new Pager(_siteService.GetSiteSettings(), pagerParameters);
            var searchFields = Services.WorkContext.CurrentSite.As<SearchSettingsPart>().SearchedFields;

            IPageOfItems<ISearchHit> searchHits = new PageOfItems<ISearchHit>(new ISearchHit[] { });
            try {

                searchHits = _searchService.Query(q, pager.Page, pager.PageSize,
                                                  Services.WorkContext.CurrentSite.As<SearchSettingsPart>().Record.FilterCulture,
                                                  searchFields,
                                                  searchHit => searchHit);
            } catch(Exception exception) {
                Logger.Error(T("Invalid search query: {0}", exception.Message).Text);
                Services.Notifier.Error(T("Invalid search query: {0}", exception.Message));
            }

            var list = Shape.List();
            foreach (var contentItem in searchHits.Select(searchHit => _contentManager.Get(searchHit.ContentItemId))) {
                // ignore search results which content item has been removed or unpublished
                if(contentItem == null){
                    searchHits.TotalItemCount--;
                    continue;
                }

                list.Add(_contentManager.BuildDisplay(contentItem, "Summary"));
            }

            var pagerShape = Shape.Pager(pager).TotalItemCount(searchHits.TotalItemCount);

            var searchViewModel = new SearchViewModel {
                Query = q,
                TotalItemCount = searchHits.TotalItemCount,
                StartPosition = (pager.Page - 1) * pager.PageSize + 1,
                EndPosition = pager.Page * pager.PageSize > searchHits.TotalItemCount ? searchHits.TotalItemCount : pager.Page * pager.PageSize,
                ContentItems = list,
                Pager = pagerShape
            };

            //todo: deal with page requests beyond result count

            return View(searchViewModel);
        }
        public ActionResult Index(PagerParameters pagerParameters, string searchIndex = null, string q = "") {
            var pager = new Pager(_siteService.GetSiteSettings(), pagerParameters);
            var searchSettingPart = Services.WorkContext.CurrentSite.As<SearchSettingsPart>();
            var index = !String.IsNullOrWhiteSpace(searchIndex) ? searchIndex.Trim() : searchSettingPart.SearchIndex;

            if (String.IsNullOrEmpty(index)) {
                Services.Notifier.Error(T("Please define a default search index."));
                return HttpNotFound();
            }

            IPageOfItems<ISearchHit> searchHits = new PageOfItems<ISearchHit>(new ISearchHit[] { });
            try {
                searchHits = _searchService.Query(
                    q, pager.Page, pager.PageSize,
                    Services.WorkContext.CurrentSite.As<SearchSettingsPart>().FilterCulture,
                    index,
                    searchSettingPart.GetSearchFields(index),
                    searchHit => searchHit);
            } catch(Exception exception) {
                Logger.Error(T("Invalid search query: {0}", exception.Message).Text);
                Services.Notifier.Error(T("Invalid search query: {0}", exception.Message));
            }

            var list = Shape.List();
            var foundIds = searchHits.Select(searchHit => searchHit.ContentItemId).ToList();

            // ignore search results which content item has been removed or unpublished
            var foundItems = _contentManager.GetMany<IContent>(foundIds, VersionOptions.Published, new QueryHints()).ToList();
            foreach (var contentItem in foundItems) {
                list.Add(_contentManager.BuildDisplay(contentItem, "Summary"));
            }
            searchHits.TotalItemCount -= foundIds.Count() - foundItems.Count();

            var pagerShape = Shape.Pager(pager).TotalItemCount(searchHits.TotalItemCount);

            var searchViewModel = new SearchViewModel {
                Query = q,
                TotalItemCount = searchHits.TotalItemCount,
                StartPosition = (pager.Page - 1) * pager.PageSize + 1,
                EndPosition = pager.Page * pager.PageSize > searchHits.TotalItemCount ? searchHits.TotalItemCount : pager.Page * pager.PageSize,
                ContentItems = list,
                Pager = pagerShape
            };

            //todo: deal with page requests beyond result count

            return View(searchViewModel);
        }
        public ActionResult Search(PagerParameters pagerParameters, string q = "")
        {
       

            var pager = new Pager(_siteService.GetSiteSettings(), pagerParameters);
            var searchFields = _orchardServices.WorkContext.CurrentSite.As<SearchSettingsPart>().SearchedFields;

            IPageOfItems<ISearchHit> searchHits = new PageOfItems<ISearchHit>(new ISearchHit[] { });
            try
            {

                searchHits = _wikiPageService.IndexSearch(q, pager.Page, pager.PageSize,
                                                  _orchardServices.WorkContext.CurrentSite.As<SearchSettingsPart>().Record.FilterCulture,
                                                  searchFields,
                                                  searchHit => searchHit);
            }
            catch (Exception exception)
            {
                Logger.Error(T("Invalid search query: {0}", exception.Message).Text);
                _orchardServices.Notifier.Error(T("Invalid search query: {0}", exception.Message));
            }

            var list = Shape.List();
            var foundIds = searchHits.Select(searchHit => searchHit.ContentItemId).ToList();

            // ignore search results which content item has been removed or unpublished
            var foundItems = _orchardServices.ContentManager.GetMany<IContent>(foundIds, VersionOptions.Published, new QueryHints()).ToList();
            foreach (var contentItem in foundItems)
            {
                list.Add(_orchardServices.ContentManager.BuildDisplay(contentItem, "Summary"));
            }
            searchHits.TotalItemCount -= foundIds.Count() - foundItems.Count();

            var pagerShape = Shape.Pager(pager).TotalItemCount(searchHits.TotalItemCount);

            var searchViewModel = new SearchViewModel
            {
                Query = q,
                TotalItemCount = searchHits.TotalItemCount,
                StartPosition = (pager.Page - 1) * pager.PageSize + 1,
                EndPosition = pager.Page * pager.PageSize > searchHits.TotalItemCount ? searchHits.TotalItemCount : pager.Page * pager.PageSize,
                ContentItems = list,
                Pager = pagerShape
            };

            //todo: deal with page requests beyond result count

            return View(searchViewModel);
        }