public IEnumerable <Post> ArchivePosts(int?Year, int?Month, int?Day, string Slug)
{
var posts = Posts.AsQueryable();
if (Year.HasValue)
{
posts = posts.Where(p => p.Published.Year == Year.Value);
}
if (Month.HasValue)
{
posts = posts.Where(p => p.Published.Month == Month.Value);
}
if (Day.HasValue)
{
posts = posts.Where(p => p.Published.Day == Day.Value);
}
if (!string.IsNullOrWhiteSpace(Slug))
{
posts = posts.Where(p => p.Slug.Equals(Slug, StringComparison.InvariantCultureIgnoreCase));
}
return(posts.OrderByDescending(p => p.Published));
}