TDS Model Inheritance

Team Development for Sitecore Model Inheritance

For a long time now I have been trying to find a way to have TDS models inherit across the Helix architecture.

I found this link on StackOverflow:

https://stackoverflow.com/questions/31711197/sitecore-tds-multi-project-properties-base-template-reference-not-working-for-me

And thought it worth re-posting - Thanks to Rohan for figuring out how to do this!

All you have to do is to update Helpers.tt in the TDS project that needs to inherit base, as follows:

public static string GetNamespace(string defaultNamespace, SitecoreItem item, bool includeGlobal = false)
{
    List namespaceSegments = new List();
    // add the following line
    namespaceSegments.Add(!item.ReferencedItem ? defaultNamespace : "[BaseProjectNameSpace]");
    // remove this line - namespaceSegments.Add(defaultNamespace);
    namespaceSegments.Add(item.Namespace);
    string @namespace = AsNamespace(namespaceSegments); // use an extension method in the supporting assembly

    return (includeGlobal ? string.Concat("global::", @namespace) : @namespace).Replace(".sitecore.templates", "").Replace("_", "");
} 

Make sure that you replace the above [BaseProjectNameSpace] with your base projects namespace. 

Also make sure you update the Multi-Project  properties for your TDS project so that it references the base project: