在Swift中将JSON字典导入Core数据

概述我在使用 Swift将JSON字典中的bool导入到下面的Exercises对象时遇到了一些麻烦.拉伸&设备对象非常简单.我知道这很简单,但我找不到一个可以模拟的例子.这是我的数据模型： Stretch对象是我的主要实体. Equipment对象将包含字符串. 练习对象属性是Bools. let jsonURL = NSBundle.mainBundle().URLForResource("see 我在使用 Swift将JsON字典中的bool导入到下面的Exercises对象时遇到了一些麻烦.拉伸&设备对象非常简单.我知道这很简单,但我找不到一个可以模拟的例子.这是我的数据模型：

Stretch对象是我的主要实体.
Equipment对象将包含字符串.
练习对象属性是Bools.

let JsonURL = NSBundle.mainBundle().URLForResource("seed",withExtension: "Json")!    let JsonData = NSData(contentsOfURL: JsonURL)    var error: NSError?    let JsonArray = NSJsONSerialization.JsONObjectWithData(JsonData!,options: nil,error: &error) as NSArray    // Inserts attributes for database    let entity = NSEntityDescription.entityForname("Stretch",inManagedobjectContext: coreDataStack.context)!    var counter = 0    for JsonDictionary in JsonArray {        counter++        // Listing of columns in JsON seed file        let stretchDescription = JsonDictionary.valueForKey("stretchDescription") as String        let generalArea = JsonDictionary.valueForKey("generalArea") as String        let muscleGroup = JsonDictionary.valueForKey("muscleGroup") as String        let equipmentCode = JsonDictionary.valueForKey("equipmentCode") as String        let sIDeMultiplIEr = JsonDictionary.valueForKey("sIDeMultiplIEr") as NSNumber        let advanced = JsonDictionary.valueForKey("advanced") as Bool        let photo = JsonDictionary.valueForKey("photo") as NSData        let runningOrWalking = JsonDictionary.valueForKey("runningOrWalking") as Bool        let cycling = JsonDictionary.valueForKey("cycling") as Bool        let weightlifting = JsonDictionary.valueForKey("weightlifting") as Bool        let aerobics = JsonDictionary.valueForKey("aerobics") as Bool        let raquetSports = JsonDictionary.valueForKey("raquestSports") as Bool        let golf = JsonDictionary.valueForKey("golf") as Bool        let yoga = JsonDictionary.valueForKey("yoga") as Bool        let equipmentDescription = JsonDictionary.valueForKey("equipmentDescription") as String        let stretch = Stretch(entity: entity,insertIntoManagedobjectContext:coreDataStack.context)        stretch.stretchDescription = stretchDescription        stretch.generalArea = generalArea        stretch.muscleGroup = muscleGroup        stretch.equipmentCode = equipmentCode        stretch.sIDeMultiplIEr = sIDeMultiplIEr        stretch.advanced = advanced        stretch.photo = photo        // Insert Equipment object        let equipmentEntity = NSEntityDescription.entityForname("Equipment",inManagedobjectContext: coreDataStack.context)        let equipmentDescriptionObject = Equipment(entity: equipmentEntity!,insertIntoManagedobjectContext: coreDataStack.context)        stretch.equipmentUsed = equipmentDescriptionObject        // figure out exercises object        let exercise = NSEntityDescription.entityForname("Exercises",inManagedobjectContext: coreDataStack.context)        let exerciSEObject = Exercises(entity:exercise!,insertIntoManagedobjectContext: coreDataStack.context)

这就是我被困住的地方.我如何完成为Exercises对象添加属性？

解决方法

This is where I’m stuck. How would I finish up adding the attributes for the Exercises object?

与向Stretch对象添加属性的方式相同.您可以通过点表示法轻松访问和设置练习属性.

let exercise = NSEntityDescription.entityForname("Exercises",inManagedobjectContext: coreDataStack.context)let exerciSEObject = Exercises(entity:exercise!,insertIntoManagedobjectContext: coreDataStack.context)exerciSEObject.aerobics = aerobics

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