ContextProvider.swift

class ContextProvider {
    struct _$ {
        static let model = NSManagedObjectModel.mergedModelFromBundles(nil)
        static let coordinator: NSPersistentStoreCoordinator = {
            let result = NSPersistentStoreCoordinator(managedObjectModel: model)
            
            var error: NSError?
            let store = result.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: URL, options: nil, error: &error)
            if !store {
                NSLog("Error creating store coordinator: %@", error!)
            }
            
            return result
        }()
        
        static let URL = (NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: NSSearchPathDomainMask.UserDomainMask)[0] as NSURL).URLByAppendingPathComponent("db.sqlite", isDirectory: false)
    }
    
    func context() -> NSManagedObjectContext {
        let result = NSManagedObjectContext()
        result.persistentStoreCoordinator = _$.coordinator
        return result
    }
}