Web サイトで高度な検索機能を作成する方法を見つけようとしています。私が現在使用しているコードは効率的ではなく、非常に高価なクエリを作成します。このようなものを作成するための良いリソース/例は何ですか:
私の検索コントローラー:
public ActionResult Index(string q = null, string authors = null, string category = null, decimal rating = 0, string published = null, int completed = 0, int page = 0)
{
List<string> categories = new List<string>();
List<string> authorss = new List<string>();
DateTime DateBy = new DateTime();
DateTime.TryParse(published, out DateBy);
if(!string.IsNullOrEmpty(authors))
authorss = authors.Split(',').ToList();
if (!string.IsNullOrEmpty(category))
categories = category.Split(',').ToList();
IEnumerable<Comic> Comics = db.Comics.Where(i => i.Title.Contains(q)).Include(i => i.ComicRatings).Include(i => i.ComicAuthors).Include("ComicAuthors.User");
if(authorss.Count() >= 1)
{
Comics = Comics.Where(i => i.ComicAuthors.Where(j => authorss.Contains(j.User.UserName)).GroupBy(j => j.Comic_Id).Where(j => j.Count() >= authorss.Count()).Any());
}
if (categories.Count() >= 1)
{
Comics = Comics.Where(i => i.ComicCategories.Where(j => categories.Contains(j.Category.Name)).GroupBy(j => j.Comic_Id).Where(j => j.Count() >= categories.Count()).Any());
}
if (rating != 0)
{
Comics = Comics.Where(i => i.ComicRatings.Where(j => j.Rating >= rating).Any());
}
if (completed == 1)
{
Comics = Comics.Where(i => i.Completed == false);
}
else if (completed == 2)
{
Comics = Comics.Where(i => i.Completed == true);
}
if (!string.IsNullOrEmpty(published))
{
Comics = Comics.Where(i => i.DatePublished >= DateBy);
}
if(page <= (Comics.Count() / 20))
page = 0;
Comics = Comics.Skip(page * 20).Take(20);
IEnumerable<LocalComicCategoriesModel> testing = helper.getCategories();
ViewSearchModel post = new ViewSearchModel
{
Comic = Comics.ToList(),
Categories = testing
};
return View(post);
}