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我已經廣泛研究了這一點。在聽到有關Parse的消息後,我一直在用Kinvey爲我的BaaS玩弄。我試圖保存一個對象,但收到與KCSPersistable有關的錯誤。KCSPersistable與迅速錯誤
class Event : NSObject{
var entityId: String? //Kinvey entity _id
var name: String?
var date: NSDate?
var location: String?
var metadata: KCSMetadata? //Kinvey metadata, optional
}
func hostToKinveyPropertyMapping() -> [NSObject : AnyObject]! {
return [
"entityId" : KCSEntityKeyId, //the required _id field
"name" : "name",
"date" : "date",
"location" : "location",
"metadata" : KCSEntityKeyMetadata //optional _metadata field
]
}
由於超類的原因,Swift稱它爲多餘的NSObject。我刪除了KCSPersistable聲明並且代碼將成功構建,但是現在我收到以下錯誤:
'Object "<KinveyPractive.Event: 0x7fed18d484c0>" of type "KinveyPractive.Event" does not implement 'hostToKinveyPropertyMapping', a required 'KCSPersistable' method for saving the object to the backend'
我遇到了問題循環。如果我刪除KCSPersistable,Xcode會詢問它。但是,如果我離開它,Xcode將無法編譯。