Json parsing Issue using objectmapper library in swift - ios

Question

I am facing issue with parsing response from server side. I get response in this format
1.)
For first image my model class is working fine. In this I don't null
2.)
For second image response my Model class is not working it's giving nil after parsing.In this I get null in array
My Model class for my api response is this
class GetTodayMyKpiResponse: Mappable{
var status: String?
var myKpiMonth: MyKpiMonthResponse?
var myKpiWeek: MyKpiWeekResponse?
required init?(map: Map){
}
func mapping(map: Map) {
status <- map["status"]
myKpiMonth <- map["myKpiMonth"]
myKpiWeek <- map["myKpiWeek"]
}
}
class MyKpiMonthResponse: Mappable{
var myKpiMonthYear: Double?
var myKpiMonthDetailList: [MyKpiMonthDetailResponse]?
var myKpiMonthList: [MyKpiMonthListReponse]?
required init?(map: Map) {
}
func mapping(map: Map) {
myKpiMonthYear <- map["myKpiMonthYear"]
myKpiMonthDetailList <- map["myKpiMonthDetail"]
myKpiMonthList <- map["myKpiMonthList"]
}
}
class MyKpiMonthDetailResponse: Mappable{
var myKpiMonthDetailOutletCode: String?
var myKpiMonthDetailUnitTiers: [String]?
var myKpiMonthDetailTargetUnits: [String]?
var myKpiMonthDetailBonusIncentive: Double?
var myKpiMonthDetailOutletName: String?
var myKpiMonthDetailModelName: [String]?
var myKpiMonthDetailMonth: String?
var myKpiMonthDetailType: Double?
required init?(map: Map) {
}
func mapping(map: Map) {
myKpiMonthDetailOutletCode <- map["myKpiMonthDetailOutletCode"]
myKpiMonthDetailUnitTiers <- map["myKpiMonthDetailUnitTiers"]
myKpiMonthDetailTargetUnits <- map["myKpiMonthDetailTargetUnits"]
myKpiMonthDetailBonusIncentive <- map["myKpiMonthDetailBonusIncentive"]
myKpiMonthDetailOutletName <- map["myKpiMonthDetailOutletName"]
myKpiMonthDetailModelName <- map["myKpiMonthDetailModelName"]
myKpiMonthDetailMonth <- map["myKpiMonthDetailMonth"]
myKpiMonthDetailType <- map["myKpiMonthDetailType"]
}
}
class MyKpiMonthListReponse: Mappable {
var myKpiMonthMaxUnit: Double?
var myKpiMonthDate: String?
var myKpiMonthBonusAmount: Double?
var myKpiMonthActivatedUnit: Double?
var myKpiMonthMinUnit: Double?
var myKpiMonthCurrentUnit: Double?
var myKpiMonthBonusStatus: String?
var myKpiMonthOutletName: String?
var myKpiMonthOutletAddress: String?
required init?(map: Map) {
}
func mapping(map: Map) {
myKpiMonthMaxUnit <- map["myKpiMonthMaxUnit"]
myKpiMonthDate <- map["myKpiMonthDate"]
myKpiMonthBonusAmount <- map["myKpiMonthBonusAmount"]
myKpiMonthActivatedUnit <- map["myKpiMonthActivatedUnit"]
myKpiMonthMinUnit <- map["myKpiMonthMinUnit"]
myKpiMonthCurrentUnit <- map["myKpiMonthCurrentUnit"]
myKpiMonthBonusStatus <- map["myKpiMonthBonusStatus"]
myKpiMonthOutletName <- map["myKpiMonthOutletName"]
myKpiMonthOutletAddress <- map["myKpiMonthOutletAddress"]
}
}
class MyKpiWeekResponse: Mappable{
var myKpiWeekDetail: [MyKpiWeekDetailResponse]?
var myKpiWeekList: [MyKpiWeekListResponse]?
var myKpiWeekYear: Double?
var myKpiWeekMonth: Double?
required init?(map: Map) {
}
func mapping(map: Map) {
myKpiWeekDetail <- map["myKpiWeekDetail"]
myKpiWeekList <- map["myKpiWeekList"]
myKpiWeekYear <- map["myKpiWeekYear"]
myKpiWeekMonth <- map["myKpiWeekMonth"]
}
}
class MyKpiWeekDetailResponse: Mappable{
var myKpiWeekDetailEndDate: String?
var myKpiWeekDetailUnitTiers: [String]?
var myKpiWeekDetailOutletName: String?
var myKpiWeekDetailStartDate: String?
var myKpiWeekDetailType: Double?
var myKpiWeekDetailModelName: [String]?
var myKpiWeekDetailTypeOfReward: String?
var myKpiWeekDetailOutletCode: String?
var myKpiWeekDetailTargetUnits: [String]?
required init?(map: Map) {
}
func mapping(map: Map) {
myKpiWeekDetailEndDate <- map["myKpiWeekDetailEndDate"]
myKpiWeekDetailUnitTiers <- map["myKpiWeekDetailUnitTiers"]
myKpiWeekDetailOutletName <- map["myKpiWeekDetailOutletName"]
myKpiWeekDetailStartDate <- map["myKpiWeekDetailStartDate"]
myKpiWeekDetailType <- map["myKpiWeekDetailType"]
myKpiWeekDetailModelName <- map["myKpiWeekDetailModelName"]
myKpiWeekDetailTypeOfReward <- map["myKpiWeekDetailTypeOfReward"]
myKpiWeekDetailOutletCode <- map["myKpiWeekDetailOutletCode"]
myKpiWeekDetailTargetUnits <- map["myKpiWeekDetailTargetUnits"]
}
}
class MyKpiWeekListResponse: Mappable {
var myKpiWeekBonusStatus: String?
var myKpiWeekEndDate: String?
var myKpiWeekActivatedUnit: Double?
var myKpiWeekStartDate: String?
var myKpiWeekMinUnit: Double?
var myKpiWeekCurrentUnit: Double?
var myKpiWeekOutletName: String?
var myKpiWeekTypeOfReward: String?
var myKpiWeekOutletAddress: String?
var myKpiWeekMaxUnit: Double?
required init?(map: Map) {
}
func mapping(map: Map) {
myKpiWeekBonusStatus <- map["myKpiWeekBonusStatus"]
myKpiWeekEndDate <- map["myKpiWeekEndDate"]
myKpiWeekActivatedUnit <- map["myKpiWeekActivatedUnit"]
myKpiWeekStartDate <- map["myKpiWeekStartDate"]
myKpiWeekMinUnit <- map["myKpiWeekMinUnit"]
myKpiWeekCurrentUnit <- map["myKpiWeekCurrentUnit"]
myKpiWeekOutletName <- map["myKpiWeekOutletName"]
myKpiWeekTypeOfReward <- map["myKpiWeekTypeOfReward"]
myKpiWeekOutletAddress <- map["myKpiWeekOutletAddress"]
myKpiWeekMaxUnit <- map["myKpiWeekMaxUnit"]
}
}

Answer 1

If there is no data available then send empty array not null. Even in myKpiMonthList doesn't contain null array. There is no logic that null value in array at index 2.
You can send empty string or empty array even. Still there is no any logic for the null value.
Either handle all null value from server side else it always crash.