MVC understanding and CoreData relationships between objects

Hi. Need advice for how manage objects in my CoreData app. In ViewController i made static function what create context object for me. But i need to access this function from my MO classes (entities representations). How i can do it? May be with initialization, Controller create MO objects and initialize them somehow. Don't know.

 

Mmm..

Code:

// The designated initializer.
- (id)initWithEntity:(NSEntityDescription *)entity insertIntoManagedObjectContext:(NSManagedObjectContext *)context;