CoreData example model

MyProfileSettings+CoreDataClass.swift

import CoreData
import Foundation

// NOTE: use manual / none code generation - 
// it give full controll over models properties(custom getters + setters) + model lifecycle

// To create a new model class:
// 1. Focus on core data model class
// 2. XCode -> Editor -> Create NSManagedObject Subclass
// 3. Select an appropriate model from database scheme and create a class

/**
User profile (id, email, phone, picture_url, social links and ect.)
*/
@objc(MyProfileSettings)
class MyProfileSettings: NSManagedObject {
    
    @discardableResult
    convenience init(settings: MyProfileSettingsJSON, context: NSManagedObjectContext) {
        
        let name = String(describing: type(of: self))
        guard let entity = NSEntityDescription.entity(forEntityName: name, in: context) else {
            preconditionFailure("Unable to create NSEntityDescription")
        }
        self.init(entity: entity, insertInto: context)
        
        self.email = settings.email
        self.id = Int64(settings.id ?? 0)
        self.name = settings.name
        self.phone = settings.phone
        self.picture = settings.picture
        self.ridingStyle = setRidingStyles(settings.ridingStyle?.compactMap{ return $0.rawValue } ?? [])
        guard let media = settings.social else {
            return
        }
        let newMedia = UserSocialMedia(media: media, relationship: self, context: context)
        self.media = newMedia
        
    }
    
    func setRidingStyles(_ styles: [String]) -> Data {
        return NSKeyedArchiver.archivedData(withRootObject: styles)
    }
    
    func getRidingStyles() -> [RidingStyle] {
        guard let data = self.ridingStyle else {
            return []
        }
        guard let result = NSKeyedUnarchiver.unarchiveObject(with: data) as? [String] else {
            assertionFailure("Unable to unarchive data")
            return []
        }
        return result.compactMap{ RidingStyle(rawValue: $0) }
    }
    
    func getGender() -> Gender? {
        let intValue = Int(self.gender)
        guard let gender = Gender(rawValue: intValue) else {
            return nil
        }
        return gender
    }
    
}

MyProfileSettings+CoreDataProperties.swift

import CoreData
import Foundation

extension MyProfileSettings {

    @nonobjc
    class func fetchRequest() -> NSFetchRequest<MyProfileSettings> {
        return NSFetchRequest<MyProfileSettings>(entityName: "MyProfileSettings")
    }

    @NSManaged var email: String?
    @NSManaged var id: Int64
    @NSManaged var name: String?
    @NSManaged var phone: String?
    @NSManaged var picture: String?
    @NSManaged var ridingStyle: Data?
    @NSManaged var gender: Int64
    @NSManaged var media: UserSocialMedia?
    @NSManaged var parent: MyUser?
}