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// Assuming a "Book" with a priMary key of `1` already exists. try! realm.write { realm.create(Book.self,value: ["id": 1,"price": 9000.0],update: truE) // the book's `title` property will remain unchanged. }
目前看起来我需要再次从领域读取以获取最新的对象.如果我错了,请纠正我.
谢谢
这是基于您提供的代码的片段,演示了这一点:
class Book: Object { dynamic var id = "" dynamic var title = "" dynamic var price = 0.0 override class func primaryKey() -> String? { return "id" } } let realm = try! Realm() let book = Book(value: ["1","To Kill a mockingbird",9.99]) try! realm.write { realm.add(book) } let results = realm.allObjects(ofType: Book.self) try! realm.write { realm.createObject(ofType: Book.self,populatedWith: ["id": "1","price": 7.99],update: truE) } print(book) print(results)
Book { id = 1; title = To Kill a mockingbird; price = 7.99; } Results<Book> ( [0] Book { id = 1; title = To Kill a mockingbird; price = 7.99; } )
如您所见,现有对象的price属性已更新为新值.
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