I have this JSON:
{
"location": {
"position": {
"type": "Point",
"coordinates": [
45.579553,
11.751805
]
}
}
}
Which belongs to another JSON object.
Trying to map it with Realm and ObjectMapper, I am findind difficulties mapping the coordinates property which is an array of double.
That's what reading the documentation and S.O. seems to have sense:
import Foundation
import RealmSwift
import ObjectMapper
class Coordinate:Object, Mappable{
dynamic var latitude:Double = 0.0
dynamic var longitude:Double = 0.0
required convenience init?(_ map: Map) {
self.init()
}
func mapping(map: Map) {
latitude <- map[""]
longitude <- map[""]
}
}
class Position: Object, Mappable{
var type:String = ""
var coordinates:Coordinate?
required convenience init?(_ map: Map) {
self.init()
}
func mapping(map: Map) {
type <- map["type"]
coordinates <- map["coordinates"]
}
}
class Location: Object, Mappable{
dynamic var id = ""
dynamic var position:Position?
dynamic var desc = ""
override static func indexedProperties()->[String]{
return["id"]
}
override class func primaryKey() -> String? {
return "id"
}
required convenience init?(_ map: Map) {
self.init()
}
func mapping(map: Map) {
id <- map["id"]
position <- map["position"]
}
}
However I'm stuck in understanding how to map the "coordinates" object. Please note that this problem has nothing to do with ObjectMapper itself, it's more of a question on how to assign an array of Double to a property in a Realm model.
I was able to solve this following the indications in this issue:
https://github.com/realm/realm-cocoa/issues/1120 (credits @jazz-mobility)
class DoubleObject:Object{
dynamic var value:Double = 0.0
}
class Position: Object, Mappable{
var type:String = ""
var coordinates = List<DoubleObject>()
required convenience init?(_ map: Map) {
self.init()
}
func mapping(map: Map) {
type <- map["type"]
var coordinates:[Double]? = nil
coordinates <- map["coordinates"]
coordinates?.forEach { coordinate in
let c = DoubleObject()
c.value = coordinate
self.coordinates.append(c)
}
}
}