private IEnumerable <PageModel> GetChildren(Data.Page p, int depth)
{
var firstLevel = new[] { p }.ToList();
var levels = EnumerableEx.Generate(new { pages = firstLevel, depth = Math.Max(4, depth) }, x => x.depth >= 0 && x.pages.Any(),
x => new { pages = PagesService.GetChildPages(x.pages).ToList(), depth = x.depth - 1 },
x => x.pages)
.ToList();
return(MergeChildPages(p, levels.Skip(1)));
}
private IEnumerable <PageModel> MergeChildPages(Data.Page parent, IEnumerable <List <Data.Page> > levels)
{
var prefix = parent.Url + "/";
return(from c in levels.FirstOrDefault().EmptyIfNull()
where c.Url.StartsWith(prefix)
orderby c.SortOrder
select new PageModel {
Page = c,
ChildPages = MergeChildPages(c, levels.Skip(1))
});
}