public async Task <IActionResult> Search(string searchAlgorithm, string queryText)
{
// Return these values to the view so that the view would not be reset after every search.
ViewData["searchAlgorithm"] = searchAlgorithm;
ViewData["queryText"] = queryText;
var posts = new List <Post>(await RssParser.ReadFeedsAsync());
await HtmlParser.FetchPostContents(posts);
SearchAlgorithm.FilterPosts(posts, queryText, searchAlgorithm);
return(View(posts));
}