// Displays a search interface, listing search results from the entire index
public IActionResult Index()
{
// Prepares a list of filter queries for the search request
IList <string> filterQueries = InitializeFilterQueries();
// Configures the 'SearchParameters' object
Microsoft.Azure.Search.Models.SearchParameters searchParams = ConfigureSearchParameters(filterQueries);
// Returns all results on initial page load
string searchString = "*";
// Prepares a view model used to hold the search results and search configuration
AzureSearchViewModel model = new AzureSearchViewModel();
// Performs a search request on the specified Azure Search index with the configured 'SearchParameters' object
DocumentSearchResult <Document> result = searchIndexClient.Documents.Search(searchString, searchParams);
// Fills the corresponding view model with facets retrieved from the search query
if (result.Facets != null)
{
foreach (var facet in result.Facets.Take(5))
{
foreach (FacetResult value in facet.Value)
{
AddFacet(model, value, facet.Key);
}
}
}
// Fills the view model with search results and displays them in a corresponding view
return(View("SearchIndex", PrepareSearchResultsViewModel(result, model)));
}
public IActionResult Search(AzureSearchViewModel searchSettings)
{
// Prepares a list of filter queries for the search request
IList <string> filterQueries = InitializeFilterQueries();
// Adds filter queries based on the selected options in the faceted navigation (coffee farm and region)
IEnumerable <FacetViewModel> selectedCountries = searchSettings.FilterCountry?.Where(x => x.Selected);
IEnumerable <FacetViewModel> selectedFarms = searchSettings.FilterFarm?.Where(x => x.Selected);
if (selectedCountries.Any())
{
filterQueries.Add(GetFilterQuery(selectedCountries, FACET_COFFEE_COUNTRY));
}
if (selectedFarms.Any())
{
filterQueries.Add(GetFilterQuery(selectedFarms, FACET_COFFEE_FARM));
}
// Prepares the search parameters
Microsoft.Azure.Search.Models.SearchParameters searchParams = ConfigureSearchParameters(filterQueries);
// Gets the search text from the input
string searchString = searchSettings.SearchString;
// Performs the search request for the specified Azure Search index and parameters
DocumentSearchResult <Document> result = searchIndexClient.Documents.Search(searchString, searchParams);
// Fills or updates the faceted navigation options
if (result.Facets != null)
{
foreach (FacetViewModel item in searchSettings.FilterCountry)
{
UpdateFacets(result.Facets[FACET_COFFEE_COUNTRY], item);
}
foreach (FacetViewModel item in searchSettings.FilterFarm)
{
UpdateFacets(result.Facets[FACET_COFFEE_FARM], item);
}
}
// Displays the search results
return(View("SearchIndex", PrepareSearchResultsViewModel(result, searchSettings)));
}
// Adds a retrieved 'FacetResult' to the list of facets in the corresponding model
private void AddFacet(AzureSearchViewModel model, FacetResult facetResult, string resultFacetKey)
{
FacetViewModel item = new FacetViewModel()
{
Name = $"{facetResult.Value} ({facetResult.Count})", Value = facetResult.Value.ToString()
};
switch (resultFacetKey)
{
case FACET_COFFEE_COUNTRY:
model.FilterCountry.Add(item);
break;
case FACET_COFFEE_FARM:
model.FilterFarm.Add(item);
break;
default:
break;
}
}
public ActionResult HandleSearchForm(AzureSearchViewModel model)
{
if (!ModelState.IsValid)
{
return(CurrentUmbracoPage());
}
string searchPhrase = model.SearchPhrase;
// If blank search, assume they want to search everything
if (string.IsNullOrWhiteSpace(searchPhrase))
{
searchPhrase = "*";
}
model.SearchResult = AzureSearchHelper.Search(searchPhrase);
//Set the data that will be used in the view
TempData["AzureSearchViewModel"] = model;
//All done - redirect to the current page
return(RedirectToCurrentUmbracoPage());
}
// Fills a view model with retrieved search results and faceted navigation options
private AzureSearchViewModel PrepareSearchResultsViewModel(DocumentSearchResult <Document> searchResult, AzureSearchViewModel model)
{
if (searchResult.Results.Count == 0)
{
model.SearchResults = null;
return(model);
}
foreach (SearchResult <Document> result in searchResult.Results)
{
model.SearchResults.Add(new DocumentViewModel()
{
DocumentTitle = $"{result.Document["skuname"]}",
DocumentShortDescription = $"{result.Document["skushortdescription"]}",
Highlights = result.Highlights
});
}
return(model);
}
