Override NSManagedObject getter for localized string

Question

I have a bunch of NSManagedObject entities in which I have a set of fields which needs to be translated properly.

I've read other posts about best practices for core data localization, however I was really hoping there was a method to centralize the management of the resolution of properly translated strings from keys related to entities.

So for example if I have an entity called Books with a field localizedDescription, instead of creating a relationship with a LocalizedBook which is an entity created just for the purpose of translation, I'd love to have all entities related to real world abstractions, and a unique entity, which could be also a strings file or a NSDictionary.

This way I'd love to create a subclass of NSManagedObject and a super class of Book in wich the getters for the fields, conditionally, could read the raw value or do some math and then return the translated value.

So what I am asking here is basically: how can I -with subclassing or categories- override the getter of every NSManagedObject field without writing the getter for every field or looping the fields? Is there a method I could override, like valueForKey:, without breaking anything?

For the sake of curiosity, I am more interested in this specific problem than to find the better way to solve the translation problem or the absolute best practice for translating core data values.

Answer 1

No you cant override getters without writing them. Both -valueForKey: and -primitiveValueForKey: should not be overridden.

UPD: May be overriding such methods, as NSObject's -methodForSelector: will do a trick.

Answer 2

当需要在应用程序中显示它们时，如何仅将所有值以一种语言保存在商店中，然后使用NSLocalizedString进行翻译呢？