Arrays 如何使用另一个结构的列表将结构保存到领域
我根据在struct中创建了数据持久层,但我还需要使用struct创建一些领域对象,并将其添加到struct中的另一个领域对象,如array。我的意思是:Arrays 如何使用另一个结构的列表将结构保存到领域,arrays,swift,struct,realm,Arrays,Swift,Struct,Realm,我根据在struct中创建了数据持久层,但我还需要使用struct创建一些领域对象,并将其添加到struct中的另一个领域对象,如array。我的意思是: public struct Publisher { public let identifier: Int public let name: String } public struct Character { public let identifier: Int public let name: String
public struct Publisher {
public let identifier: Int
public let name: String
}
public struct Character {
public let identifier: Int
public let name: String
public let realName: String
var publisherArray: [Publisher]
}
final class PublisherObject: Object {
dynamic var identifier = 0
dynamic var name = ""
override static func primaryKey() -> String? {
return "identifier"
}
}
final class CharacterObject: Object {
dynamic var identifier = 0
dynamic var name = ""
dynamic var realName = ""
var publisherArray: List<PublisherObject>?
override static func primaryKey() -> String? {
return "identifier"
}
}
但我不知道,我必须在这里输入什么:
public func managedObject() -> CharacterObject {
let character = CharacterObject()
character.identifier = identifier
character.name = name
character.realName = realName
// here must be something like that, but for array
// character.publisherArray = publisherArray.managedObject()
return character
}
谢谢大家的帮助:-)我终于解决了我的问题:-)
不要为每个结构创建重复的类,只需使用它就可以为您解决所有问题。只需使您的结构/枚举符合
realamable
协议即可。您不仅可以保存结构数组,还可以保存字典、可选类型等
第一眼:
下面是一个如何实现持久性抽象层的示例项目:
谢谢你给我展示了这个不错的扩展,当我创建这篇文章时,这个未读的扩展并不存在。我下次可能会用到这个:-)。
public func managedObject() -> CharacterObject {
let character = CharacterObject()
character.identifier = identifier
character.name = name
character.realName = realName
// here must be something like that, but for array
// character.publisherArray = publisherArray.managedObject()
return character
}
public func managedObject() -> CharacterObject {
let character = CharacterObject()
character.identifier = identifier
character.name = name
character.realName = realName
publisherArray.forEach({ publisher in
character.publisherArray.append(publisher.managedObject())
})
return character
}