我试图弄清楚如何在我的网站上制作高级搜索功能。我现在使用的代码效率不高,并且创建了一个非常昂贵的查询。什么是创建这样的东西的好资源/示例:
我的搜索控制器:
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);
}