Imagine a scenario where you have a main catalog containing all your products and several “sub” catalogs with products linked from the main catalog.
When you do a search for a product in the sub catalog and you would want to get the link to a product, you would get the link to the product within the main catalog, as the main product is the only one in the index.
With the help of a reference to the catalog you are currently in, you can construct the correct link to the linked product in the sub catalog like this:
public void GetProductUrl(ProductContent product, ContentReference catalogLink, out string path)
{
path = product.RouteSegment;
ContentReference parentLink = product.ParentLink;
if (catalogLink.CompareToIgnoreWorkID(contentReference: parentLink))
{
return;
}
ContentReference contentLink = product.ContentLink;
int objectId = this.referenceConverter.GetObjectId(contentLink: catalogLink);
NodeContent content;
while (this.contentLoader.TryGet(contentLink: parentLink, content: out content))
{
if (content.CatalogId != objectId)
{
NodeContent linkedParentNode = this.GetLinkedParentNode(
contentLink: contentLink,
catalogLink: catalogLink);
if (linkedParentNode == null)
{
return;
}
content = linkedParentNode;
contentLink = linkedParentNode.ContentLink;
}
path = content.RouteSegment + "/" + path;
parentLink = content.ParentLink;
if (this.referenceConverter.GetContentType(contentLink: parentLink) == CatalogContentType.Catalog)
{
break;
}
}
}
private NodeContent GetLinkedParentNode(ContentReference contentLink, ContentReference catalogLink)
{
List<ContentReference> source = this.relationRepository.GetParents<NodeRelation>(childLink: contentLink)
.Where(r => r.TargetCatalog.CompareToIgnoreWorkID(contentReference: catalogLink)).Select(r => r.Parent)
.ToList();
if (!source.Any())
{
return null;
}
LoaderOptions settings =
new LoaderOptions { new LanguageLoaderOption { Language = ContentLanguage.PreferredCulture } };
return this.contentLoader.GetItems(contentLinks: source, settings: settings).OfType<NodeContent>()
.FirstOrDefault();
}
It’s just a small “trick”, but can be useful in certain scenarios. You can also find the code in a gist
EPiServer Development 