Setting to-many relationships with a CDQTargetedQuery or Array

[markrickert]

I ran into a problem where I'm having to set a to-many relationship with the following code:

new_things = Thing.where(:id).in([1, 2, 3, 4, 5]).array
my_object.things = NSSet.setWithArray(new_things)

The code above works.

This throws an error:

new_things = Thing.where(:id).in([1, 2, 3, 4, 5])
my_object.things = new_things

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Unacceptable type of value for to-many relationship: property = "things"; desired type = NSSet; given type = CDQTargetedQuery; value = #CDQ::CDQTargetedQuery:0x11a11c860.'

Got the same error with a different type when calling .array on the query

Ideally, CDQ would recognize that I'm trying to set a to-many relationship with a query or an array and automatically turn it into an NSSet for me.

[kemiller]

It may not be possible to detect this automatically because of the way NSManagedObjects work. We might be able to exploit RubyMotion's translation of thing=() into setThing(), but I'm not sure if it will work.