一次为多个属性的核心数据setValue [英] Core Data setValue for Multiple Attributes at once

问题描述

我在Core Data中有一个Book实体，而一个Book类作为模型层。

I have a Book entity in Core Data and a Book class acting as the model layer.

My Book模型有多个属性。在Core Data中保存图书的时候，我想把它们存储起来。

My Book model has multiple attributes. When comes the time to persist the books in Core Data, I would like to store them without having to do

bookObject.setValue(book.title , forKey: "name")
bookObject.setValue(book.author , forKey: "author")
bookObject.setValue(book.datePublished , forKey: "datePublished")
etc...

是否有类似于setValue的方法来同时设置多个CoreData Entity属性？ / p>

Is there a method akin to setValue for setting multiple CoreData Entity attributes at once ?

推荐答案

如果 Book 模型类继承从 NSObject 和使用
相同的属性名称和类型作为核心数据实体
键值编码：

If the Book model class inherits from NSObject and uses the same property names and types as the Core Data entity then you can use Key-Value Coding:

let keys = ["title", "author", "datePublished"]
let dict = book.dictionaryWithValuesForKeys(keys)
bookObject.setValuesForKeysWithDictionary(dict)

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