In some cases we may need some entry content that the entry does not contain. For instance, the dataformview field may need some entry content for a search criterion but the parent view does not display the content and so the content is not included in the entry that is passed to the field renderer.

The method should default to fields which have dataform content and shoudl be overriden by other fields as required. It should check if the field content exists in the passed entry, and if not, fetch it from DB, add it to the entry and return the adjusted entry.