public async Task <IActionResult> Index(string sortOrder, string currentFilter, string searchString, int?pageIndex = 1, int pageSize = 10)
{
ViewData["CurrentPageSize"] = pageSize;
ViewData["CurrentSort"] = sortOrder;
ViewData["TitleSortParm"] = string.IsNullOrEmpty(sortOrder) ? "title_desc" : "";
ViewData["AuthorSortParm"] = sortOrder == "Author" ? "author_desc" : "Author";
ViewData["PublishedSortParm"] = sortOrder == "Published" ? "published_desc" : "Published";
ViewData["PublishedDateSortParm"] = sortOrder == "PublishedDate" ? "publishedDate_desc" : "PublishedDate";
if (searchString != null)
{
pageIndex = 1;
}
else
{
searchString = currentFilter;
}
ViewData["CurrentFilter"] = searchString;
Expression <Func <Post, bool> > filter = null;
if (!string.IsNullOrEmpty(searchString))
{
filter = c => c.Title.Contains(searchString) || c.Slug.Contains(searchString) || c.Author.UserName.Contains(searchString);
}
Func <IQueryable <Post>, IOrderedQueryable <Post> > orderBy = null;
switch (sortOrder)
{
case "title_desc":
orderBy = q => q.OrderByDescending(c => c.Title);
break;
case "Author":
orderBy = q => q.OrderBy(c => c.Author.UserName);
break;
case "author_desc":
orderBy = q => q.OrderByDescending(c => c.Author.UserName);
break;
case "Published":
orderBy = q => q.OrderBy(c => c.Published);
break;
case "published_desc":
orderBy = q => q.OrderByDescending(c => c.Published);
break;
case "PublishedDate":
orderBy = q => q.OrderBy(c => c.PublishedDate);
break;
case "publishedDate_desc":
orderBy = q => q.OrderByDescending(c => c.PublishedDate);
break;
default:
orderBy = q => q.OrderBy(c => c.Title);
break;
}
var posts = await _postServices.GetAsync(filter : filter, orderBy : orderBy, pageIndex : pageIndex ?? 1, pageSize : pageSize);
return(View(posts));
}
