I'm looking to use "in_place_editor_field" on an "Index" page of
items. Basically I want to mimic spreadsheet functionality for pre-
existing line items in order to edit their attributes. However, none
of the "in_place_editor" examples I've seen provide any useful real-
world application of this nature.
Also, a lot of the existing code examples don't work. I'm aware that
the code was removed from Core, but even after installing it as a
plugin, it doesn't seem to do anything.