Arvados

https://apidock.com/rails/ActiveRecord/Relation/update_all

21290-sync-past-versions @ f7434a49187a0e429b77c45fadcbaa5413434cfc

developer-run-tests: #3986

• All agreed upon points are implemented / addressed.
  • yes
• Anything not implemented (discovered or discussed during work) has a follow-up story.
  • n/a
• Code is tested and passing, both automated and manual, what manual testing was done is described
  • passes tests
• Documentation has been updated.
  • n/a
• Behaves appropriately at the intended scale (describe intended scale).
  • Should greatly improve performance of operations that require synchronizing changes to old versions of a collection, as this is now a single UPDATE operation instead of loading, updating, and saving each record individually.
• Considered backwards and forwards compatibility issues between client and server.
  • n/a
• Follows our coding standards and GUI style guidelines.
  • yes

Turns out there's an ActiveRecord method called update_all that does exactly what we want, so this is a very simple fix.

LGTM