Just wanted to reach out if its possible to have a calculated field in a document type, i.e i want to implement the calculation in the back end via C#, and have a field that exposes that calculation via the delivery API for example.
I’m sure this is something already covered, but i am having a hard time finding much on this topic.
If you had a field on your document type, calculated or not, it would only update when you save or publish content. if you truly need something that will calculate when you retrieve your content via an API, you can either write your own API endpoint or extend the Umbraco Delivery API.
You can create your own custom property editor, but that would only calculate on save/publish, but you could then also create your own Delivery API property editor support using IDeliveryApiPropertyValueConverter.