Hello,
I would need this for a new concept / not for the standard orders.
Hopefully the solution wouldn’t involve coding (I am a very good python programmer but I haven’t had the time to dig into the ERPNext’s code). I also read your answer in this thread: Warehouse hierarchy [Tree/Nested Set] - #4 by rmehta
Let me put the problem in another way (3rd approach): take the Project, Project Task and Task doc types.
I saw that while creating a new task in the Project it will also be visible in Task (and I presume that behind the scenes it is actually initially created in Project Task which has the is child table check-box checked.).
In the same way I would need to create an Unit inside Order but I would need the Units to be editable also from outside the Orders page (like tasks can be edited both inside the projects and outside the projects page). I think that this approach requires 3 doc types one of which would be a child table (not editable directtly).
Thank you,
Sorin