You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
2.2 KiB
69 lines
2.2 KiB
////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright 2014 Realm Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////
|
|
|
|
import UIKit
|
|
import RealmSwift
|
|
|
|
|
|
class Dog: Object {
|
|
@objc dynamic var name = ""
|
|
@objc dynamic var age = 0
|
|
// Define "owners" as the inverse relationship to Person.dogs
|
|
let owners = LinkingObjects(fromType: Person.self, property: "dogs")
|
|
}
|
|
|
|
class Person: Object {
|
|
@objc dynamic var name = ""
|
|
let dogs = List<Dog>()
|
|
}
|
|
|
|
#if !swift(>=4.2)
|
|
extension UIApplication {
|
|
typealias LaunchOptionsKey = UIApplicationLaunchOptionsKey
|
|
}
|
|
#endif
|
|
|
|
@UIApplicationMain
|
|
class AppDelegate: UIResponder, UIApplicationDelegate {
|
|
|
|
var window: UIWindow?
|
|
|
|
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
|
|
window = UIWindow(frame: UIScreen.main.bounds)
|
|
window?.rootViewController = UIViewController()
|
|
window?.makeKeyAndVisible()
|
|
|
|
do {
|
|
try FileManager.default.removeItem(at: Realm.Configuration.defaultConfiguration.fileURL!)
|
|
} catch {}
|
|
|
|
let realm = try! Realm()
|
|
try! realm.write {
|
|
realm.create(Person.self, value: ["John", [["Fido", 1]]])
|
|
realm.create(Person.self, value: ["Mary", [["Rex", 2]]])
|
|
}
|
|
|
|
// Log all dogs and their owners using the "owners" inverse relationship
|
|
let allDogs = realm.objects(Dog.self)
|
|
for dog in allDogs {
|
|
let ownerNames = dog.owners.map { $0.name }
|
|
print("\(dog.name) has \(ownerNames.count) owners (\(ownerNames))")
|
|
}
|
|
return true
|
|
}
|
|
}
|
|
|