MappableObject
示例
要运行示例项目，请克隆仓库，然后首先从 Example 目录中运行 pod install
需求
安装
MappableObject 通过 CocoaPods 提供。要安装它，只需在 Podfile 中添加以下行
pod "MappableObject"使用
不含主键的对象
class Cat: MappableObject {
dynamic var name: String = ""
override func mapping(map: Map) {
super.mapping(map: map)
name <- map["name"]
}
}含有主键的对象
class Dog: MappableObject {
dynamic var name: String = ""
dynamic var age: Int = 0
override class func primaryKey() -> String? {
return "name"
}
override func mappingPrimaryKey(map: Map) {
name <- map["name"]
}
override func mapping(map: Map) {
super.mapping(map: map)
age <- map["age"]
}
}JSON中主键不同的对象
class Person: MappableObject {
dynamic var name: String = ""
let dogs = List<Dog>()
override class func primaryKey() -> String? {
return "name"
}
override class func jsonPrimaryKey() -> String? {
return "full_name"
}
override func mappingPrimaryKey(map: Map) {
name <- map["full_name"]
}
override func mapping(map: Map) {
super.mapping(map: map)
dogs <- map["dogs"]
}
}自定义MapContext
class CustomContext: RealmMapContext {
var customValue: String
init(customValue: String) {
self.customValue = customValue
super.init()
}
}映射器
映射
let person = Mapper<Person>().map(JSON: ["full_name": "Arnaud Dorgans"])映射与数据库同步
let person = Mapper<Person>(options: .sync).map(JSON: ["full_name": "Arnaud Dorgans"])
//get or create Person in DB with 'Arnaud Dorgans' primary key映射同步并复制到数据库
let person = Mapper<Person>(options: [.sync, .copy]).map(JSON: ["full_name": "Arnaud Dorgans"])
//get Person from DB with 'Arnaud Dorgans' primary key, or create Person from JSON detached from Realm
//and then update detached object from JSON更新
let mapper = Mapper<Person>(options: .sync)
try! Realm().write{
var person = mapper.map(JSON: ["full_name": "Arnaud Dorgans", "dogs": [["name": "Sansa", "age": 1]]])!
// get or create Person in DB with 'Arnaud Dorgans' primary key & update 'dogs' property
person = mapper.map(JSON: ["full_name": "Arnaud Dorgans"], toObject: person)
//dogs won't be updated cause 'dogs' key isn't provided
person = mapper.map(JSON: ["full_name": "Arnaud Dorgans", "dogs": []], toObject: person)
//dogs will be updated cause 'dogs' key is provided
}覆盖
let realm = try! Realm()
try! realm.write{
var person = mapper.map(JSON: ["full_name": "Arnaud Dorgans", "dogs": [["name": "Sansa", "age": 1]]])!
// get or create Person in DB with 'Arnaud Dorgans' primary key & update 'dogs' property
person = Mapper<Person>(options: [.sync, .override]).map(JSON: ["full_name": "Arnaud Dorgans"])!
//dogs will be reset to default value [] cause 'dogs' key isn't provided
}作者
许可证
MappableObject 在 MIT 许可证下可用。更多信息请参阅 LICENSE 文件。