[PDF] Opportunity to save PDF files in a sub dir inside private files dir (per invoice type?)

Or write an post update hook which loops over all invoices and if they have a PDF generated, moves the file and updates the file entity accordingly.

What about defining an invoice type config setting "invoice type file path" relative to private files folder. Then the logic could get the path and look there if the file exists already. Then the rest of the logic could get in action.

Why not, perhaps directory path? It should be made clear that the directory set is relative to the private directory.

@dercheffe: feel free to work on this if you're able to :).

My concern from #3 is still valid so I wonder how we could mitigate that... I don't think looping over invoices is an acceptable solution for sites with a large number of invoices... And I don't think this is desirable either.

Maybe we add a descriptive text explaining the potential issues when updating the directory?

Yes, the descriptive text is not a bad solution. Perhaps additionally there could be a checkbox for triggering for the file movement to the new path per invoice type at own risk, when saving the config with a (new) sub directory path.

Ok, here's a first attempt at this... This would deserve new tests, but don't really have the time to write them atm...

Went ahead and merged this.