Hi Folks,

In my custom product catalog app built upon DNN CE v8.0.3, I have a Portal Setting to designate the catalog TabId where the products are displayed. I am trying to add the list of products into  DNNs search module by generating the URL property using NavigateUrl as such:

        public override IList GetModifiedSearchDocuments(ModuleInfo moduleInfo, DateTime beginDate)
        {
            var searchDocuments = new List();
            var urlController = new UrlController();

            var portalController = new PortalController();
            int catalogTabId = PortalController.GetPortalSettingAsInteger("CatalogTabId", moduleInfo.PortalID, 0);

            var portalSettings = new PortalSettings(moduleInfo.PortalID);

            var productCatalogController = new ProductCatalogController();
            var products = productCatalogController.GetProductCatalog();

            foreach (var product in products)
            {
                ...
                var searchDocument = new SearchDocument
                {
                    ...
                    Url = urlController.GetProductSeoUrl(product.ProductId, catalogTabId, moduleInfo.PortalID, portalSettings)
                    ...
                };
                ...
                searchDocuments.Add(searchDocument);
            }

            return searchDocuments;
        }

The search method above calls another method that gets the SEO friendly URL setup in the database like this:

        public string GetProductSeoUrl(int productId, int catalogTabId, int portalId, PortalSettings portalSettings)
        {
            if (productId > 0)
            {
                var catalogUrl = Globals.NavigateURL(catalogTabId, portalSettings, "");

                ...
            }

            return null;
        }

Problem is that the NavigateURL Method doesn't seem to work outside of HTTP Context. I debugged and can see that the catalogTabId and portalSettings params are populated, but I get this error:

Message:Object reference not set to an instance of an object.

StackTrace: at DotNetNuke.Entities.Urls.AdvancedFriendlyUrlProvider.FriendlyUrlInternal(TabInfo tab, String path, String pageName, String portalAlias, PortalSettings portalSettings) at DotNetNuke.Entities.Urls.AdvancedFriendlyUrlProvider.FriendlyUrl(TabInfo tab, String path, String pageName, PortalSettings portalSettings) at DotNetNuke.Common.Globals.NavigateURL(Int32 tabID, Boolean isSuperTab, PortalSettings settings, String controlKey, String language, String pageName, String[] additionalParameters) at DotNetNuke.Common.Globals.NavigateURL(Int32 tabID, PortalSettings settings, String controlKey, String[] additionalParameters) at AdoreCatalog.Components.UrlController.GetProductSeoUrl(Int32 productCategoryId, Int32 homeTabId, Int32 catalogTabId, Int32 portalId, PortalSettings portalSettings) in UrlController.cs:line 97 at AdoreCatalog.Components.FeatureController.GetModifiedSearchDocuments(ModuleInfo moduleInfo, DateTime beginDate) in FeatureController.cs:line 70 at DotNetNuke.Services.Search.ModuleIndexer.IndexSearchDocuments(Int32 portalId, ScheduleHistoryItem schedule, DateTime startDateLocal, Action`1 indexer)

I also tried using the line below in GetProductSeoUrl but it returned an empty value:

var catalogUrl = tabController.GetTab(catalogTabId, portalId).FullUrl;

Hopefully someone can point me in the right direction on how to get the page's friendly URL from the TabId.

It has been a very long time since I looked at an issue like this - but my original blog post on this problem may help you to solve the issue:

http://www.ifinity.com.au/Blog/EntryI...

The code it refers to was not part of the DNN Core at that point, but the same basic issue exists : you need to have a Http Context in order to store a PortalSettings object, and the URL code requires a valid PortalSettings object to create a URL. So you can still use the basic overloads to create the URLs but you need to create your own portalSettings object first. It may be more complicated now that there is portal-level language differences.