I have 2 entities, (car) model and (car) manufacturer - 1 manufacturer can have many models, a model only has 1 manufacturer.

I have 2 fetch requests, one to each entity.

I allow the user to choose a car brand (to filter out models in a list), and I'd like to save this selection between sessions - what's the best practice for this?

I've tried:

• having a boolean column in the manufacturer entity storing if it is selected
• having a separate core data entity with a single row in it, linked to the selected manufacturer

• saving the selected manufacturer's UUID to a UserDefault and filtering on that

  None of these feel like the correct method and all have hacks required to make them work.

  Can anyone help, or point me in the right direction? Thanks in advace.

This is exactly the kind of thing that UserDefaults is intended for.