JSONArray to Object Array manual mapping without creating wrapper object

[Prateek Grover]

Hey,

I am having a trouble mapping a json array response to object array manually, as in, without any network requests. Here is what I am trying to do:

Person class and mapping:

class Person: NSObject {
   
    //name
    var name:String!
   
    //number
    var number:NSNumber = NSNumber(longLong: 0)
}

class PersonRKObjectMapper{
   
    var mapping:RKObjectMapping!
   
    static let sharedInstance = PersonRKObjectMapper()
   
    private init(){
       
        self.mapping = RKObjectMapping(forClass: Person.self)
       
        self.mapping.addAttributeMappingsFromDictionary(["name":"name","number":"number"])
    }
}

TravelGroup wrapper class:

class TravelGroup: NSObject {

    var passengers:[Person]!
   
    //test
    var test:String!
   
}

class TravelGroupRKObjectMapper{
   
    var mapping:RKObjectMapping!
   
    static let sharedInstance = TravelGroupRKObjectMapper()
   
    private init(){
       
        self.mapping = RKObjectMapping(forClass: TravelGroup.self)
       
        self.mapping.addAttributeMappingsFromDictionary(["test" : "test"])
       
        self.mapping.addPropertyMapping(RKRelationshipMapping(fromKeyPath: "psgrs", toKeyPath: "passengers", withMapping: PersonRKObjectMapper.sharedInstance.mapping))
    }
}

Mapping operation:

        let JSONString = "[{\"name\": \"The name\", \"number\": 12345},{\"name\": \"The name\", \"number\": 12345}]"
       
        let MIMEType = "application/json"
       
        let data:NSData = JSONString.dataUsingEncoding(NSUTF8StringEncoding)!
       
        var personList = [Person]()
       
        do{
            let personObject:AnyObject = try RKMIMETypeSerialization.objectFromData(data, MIMEType: MIMEType)
           
            let mappingDictionary:NSDictionary = [NSNull():PersonRKObjectMapper.sharedInstance.mapping]
           
            let mapper:RKMapperOperation = RKMapperOperation(representation: personObject, mappingsDictionary: mappingDictionary as [NSObject : AnyObject])
           
            mapper.targetObject = personList
           
            do{
                try mapper.execute()
            }catch{
                print("error here")
            }

        }catch{
            print("error")
        }
       
        print(personList)

I am getting the desired answer, but I was just wondering, how would I do this without the wrapper class. Also, sometimes, NSNull() causes Objective-C bridge errors which causes crashes.

Thanks

[Prateek Grover]

It is TravelGroupRKObjectMapper.sharedInstance.mapping not PersonRKObjectMapper.sharedInstance.mapping

Also, I have added "psgrs" just to be able to map the object, otherwise, I want to map only the JSONArray