Show parent in text field

[jacmaes]

I have a rather unusual need. I need to have two fields in my template that show the parent and grandparent of the actual page in a plain (readonly) text field. Let me explain. My tree is as such:

- State

     - City

          - Point of Interest

At runtime, it's easy to retrieve the city and state of the point of interest with $page->parent and $page->parent->parent respectively. But what I'd like to have two fields that show the actual output of those queries directly in the editor. For example: City: Hoboken, State: New Jersey. The main reason is that I'm trying to output these two fields in JSON (using Christian's WebServiceTemplate) so that an app developer can grab these results without making two extra calls to the database.

A hook would probably do it, but I don't know how to achieve it. Any help would be greatly appreciated.

[LostKobrakai]

Not as unusual of an need:

https://processwire.com/talk/topic/9879-fieldtypereference/

Edit:

If you need the whole page instead of a field you'd just need to adjust the module by removing the whole "get a field" part.

[jacmaes]

Nice Benjamin! Great timing (you posted your module last night). Works great, it's exactly what I needed.