A small step ahead...
... the following code seems to create an instance of MyEntity and sets the
attribute 'attribute1' to the value 'Test'.
entityDesc = NSEntityDescription.new
entityDesc.setName("MyEntity")
att = NSAttributeDescription.new
att.setAttributeType(NSStringAttributeType)
att.setName("attribute1")
entityDesc.setProperties([att])
instance = MyEntity.alloc.initWithEntity(entityDesc,
insertIntoManagedObjectContext:nil)
instance.setValue("Test", forKey:"attribute1")
Two question arising from this code:
a) Is it really THAT complicated to create an instance of MyEntity and set the
attribute? I'm coming from the Rails/ActiveRecord world where this could easily
be done with a single line of code (including saving the instantiated object):
MyEntity.new(:attribute1 => "Test").save )
b) How can I save this fresh instance and update my NSTableView?
Regards,
Timo
Am 13.11.2011 um 22:20 schrieb Timo Springmann:
> Hi List,
>
> I've successfully created a core data entity with some attributes. I'm
> displaying object in a NSTableView and I was able to add new instances by
> calling the entities array controller add: action.
>
> The last hour I tried to figure out how to add/create a core data entity in
> ruby code without using the interface builder. I tried to instantiate a new
> object like this:
>
> MyEntity.new
>
> but I always get the following error:
>
> Failed to call designated initializer on NSManagedObject class 'MyEntity'
>
> What's the proper way of doing this?
>
> For rails-devs: I'm looking for something like:
> a = MyARObject.new
> a.attribute1 = "test"
> a.attribute2 = "test2
> a.save
>
> Regards,
> Timo
>
> --
> twitter.com/orangeorb
>
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