I have a folderstructure that looks a little like this (DocumentType
in square brackets):
Municipality [Landingpage]
|_Areas [Area]
|_Plot [Plot]
|_Subdivision [Zoning]
| |_Ballig, Falkevej [Zone]
| |_Durup, Torpager [Zone]
| |_...
| |_Vinkel, Vinkelpletvej [Zone]
|_Properties [Properties]
|_Private Homes [Types]
|_Coporate Buildings [Types]
|_Other Buildinglots [Types]
In each [Zone] I would like to have a dropdown called "Type". And that type should be a value matching the name of one of the [Properties] [Types].
You could try nuPickers (https://our.umbraco.com/packages/backoffice-extensions/nupickers/) - there's an XML data source that let's you do Xpath for content (https://github.com/uComponents/nuPickers/wiki/Data-Source-Xml).
You'd be setting "Options Xpath" to something like "//Types" to get all document of type "Types" in a dropdown. I think (haven't used nuPickers for a while).