Custom url:s

Hello,

Current version of EPiServer.CMS = 11.10.6

I have a structure that looks something like figure1.

Each "MyPage" will have a unique code/id in it's "Name in URL" (URLSegment).
This is a multisite multilingual environment.

What I would like to achieve is that all "MyPage" gets a url directly under "ContainerPage1", in this format:
mypage4 = my-domain/ContainerPage1/unique-code-from-mypage4/the-page-name-from-mypage4/
mypage1 = my-domain/ContainerPage1/unique-code-from-mypage1/the-page-name-from-mypage1/

Figure 1

SiteStartPage
- ContainerPage1
-- MyPage1
-- ContainerPage2
--- MyPage2
--- MyPage3
--- ContainerPage3
---- MyPage4
---- MyPage5

SiteStartPage2
...

Tips are gratefully received :)


So far I have been playing around with something like this, it seems to "work" ( the part after /unique-code-from-mypage4/ can be anything in this ), but I'm pretty sure there are better ways and that there are tons of possible problems here ;). Haven't any real experince doing this partial router stuff.

	public class MyPagePartialRouter : IPartialRouter<ContainerNode, MyPage>
	{
		...
		private IContentLoader _contentLoader = ServiceLocator.Current.GetInstance<IContentLoader>();
		private IUrlSegmentGenerator _urlSegmentGenerator = ServiceLocator.Current.GetInstance<IUrlSegmentGenerator>();
		public object RoutePartial(ContainerNode content, SegmentContext segmentContext)
		{
			...
			var nextSegment = segmentContext.GetNextValue(segmentContext.RemainingPath);
			var theSegmentWithUniqueCode = HttpUtility.UrlDecode(nextSegment.Next);
			var myPageInstanceFound = _contentLoader.GetDescendents(_refefToContainerPage1)
				.Select(x =>
				{
					if (_contentLoader.TryGet<MyPage>(x, out var myPageInstance))
						if (myPageInstance.URLSegment == theSegmentWithUniqueCode)
							return myPageInstance;
					return null;
				})
				.FirstOrDefault(x => x != null);
			if (myPageInstanceFound == null)
				return null;
			segmentContext.RemainingPath = ""; // I had to do like this otherwise I got a 404 
			segmentContext.RoutedContentLink = myPageInstanceFound.ContentLink;
			return myPageInstanceFound;
		}
		public PartialRouteData GetPartialVirtualPath(MyPage content, string language, RouteValueDictionary routeValues, RequestContext requestContext)
		{
			var urlSegment = _urlSegmentGenerator.IsValid(content.URLSegment)
				? content.URLSegment
				: _urlSegmentGenerator.Create(content.URLSegment);
			return new PartialRouteData()
			{
				BasePathRoot = _refefToContainerPage1,
				PartialVirtualPath = string.Format("{0}/{1}/", urlSegment, _urlSegmentGenerator.Create(content.Name))
			};
		}
	}