2) Devices can't be searched by 'exposure', which mystified me until i realised that 'exposure' isn't actually a database column, it's a field in a json metadata blob, which ransack can't search. We could move this out to its own column to make it searchable, but i think, again, it'd be worth doing that after the refactor!
Originally posted by @timcowlishaw in https://github.com/fablabbcn/smartcitizen-api/issues/257#issuecomment-1772215928