Realm + ObjectMapper
Requirements
- iOS 8.0+
- Xcode 8.3 (Swift 3.1)
Installation
Embedded frameworks require a minimum deployment target of iOS 8
CocoaPods
CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command:
$ gem install cocoapodsCocoaPods 1.2+ is required to build RealmMapper 3.0+.
To integrate RealmMapper into your Xcode project using CocoaPods, specify it in your Podfile:
source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'
use_frameworks!
pod 'RealmMapper', '~> 3.0'Then, run the following command:
$ pod installUsage
Mapping
Rule:
- Object has
primaryKeymust be StaticMappable (i) - Object has no
primaryKeyshould be Mappable (ii)
import RealmSwift
import ObjectMapper
import RealmMapper
final class User: Object, StaticMappable {
dynamic var id: String!
dynamic var name: String?
dynamic var address: Address?
let dogs = List<Dog>()
override class func primaryKey() -> String? {
return "id"
}
func mapping(map: Map) {
name <- map["name"]
address <- map["address"]
dogs <- map["dogs"]
}
static func objectForMapping(map: Map) -> BaseMappable? {
do {
let realm = try Realm()
return realm.object(ofType: self, forMapping: map)
} catch {
return nil
}
}
}
// (ii)
final class Address: Object, Mappable {
dynamic var street = ""
dynamic var city = ""
dynamic var country = ""
dynamic var phone: Phone?
let users = LinkingObjects(fromType: User.self, property: "address")
convenience required init?(map: Map) {
self.init()
}
func mapping(map: Map) {
street <- map["street"]
city <- map["city"]
country <- map["country"]
phone <- map["phone"]
}
}Import JSON to Realm
do {
let realm = try Realm()
try realm.write {
realm.map(User.self, json: jsUser) // map JSON object
realm.map(Shop.self, json: jsShops) // map JSON array
}
} catch {
}
nil value will be bypass, if you want set
nilplease useNSNull()instead