关于 ios：我可以从 Enum 数据类型中创建 Realm Object 的属性吗？
Can I make a property of Realm Object from Enum data type?
所以我有如下自定义数据类型：
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enum WeightUnit : String { case Piece case Gram case Kilogram case Karton case Pouch case Dus case Renteng case Botol init (weightUnitFromServer: String) { switch weightUnitFromServer { case"Pcs": self = .Piece case"Gram": self = .Gram case"Kilogram": self = .Kilogram case"Ctn": self = .Karton case"Pch": self = .Pouch case"Dus": self = .Dus case"Rtg": self = .Renteng case"Btl": self = .Botol default: self = .Piece } } } |
并且我希望我的产品(领域对象)具有该 WightUnit 的属性，例如
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class Product : Object { @objc dynamic var productID : Int = 0 @objc dynamic var name : String ="" @objc dynamic var categoryID : Int = 0 @objc dynamic var categoryName : String ="" @objc dynamic var unitPrice: Double = 0.0 @objc dynamic var quantityInCart = 0 @objc dynamic var quantityFromServer = 0 @objc dynamic var descriptionProduct : String ="" @objc dynamic var hasBeenAddedToWishList : Bool = false @objc dynamic var hasBeenAddedToCart : Bool = false @objc dynamic var isNewProduct : Bool = false @objc dynamic var productWeight : String ="" @objc dynamic var weightUnit : WeightUnit? <--- the problem in here @objc dynamic var minimumOrderQuantity = 0 @objc dynamic var maximumOrderQuantity = 0 } |
它给出了一个错误：
Property cannot be marked @objc because its type cannot be represented
in Objective-C
那么我可以从枚举中创建领域对象属性吗？如果可能的话怎么做？
我这样做的方法是将对象存储为 String，然后有一个单独的 get only 变量或方法将字符串转换为枚举，如下所示
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class Animal: Object { @objc dynamic var animalClass: String ="" var animalClassType: AnimalClass? { return Class(rawValue: self.animalClass) } } enum AnimalClass: String { case mammal, reptile } |
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