"Must call a designated initializer of the superclass 'Navigator'" error has occurred.

[nashirox]

I'm using ObjectMapper with Realm with these version.

• ObjectMapper 1.1.1
• Realm 0.97.0
• Swift 2.1.1
• Xcode 7.2

But when added new class with Realm + ObjectMapper, an error has occured.
below line is error message.

Must call a designated initializer of the superclass 'Navigator'

and thisi is new class i added.

import RealmSwift
import ObjectMapper

class Navigator: Object, Mappable {

    dynamic var id : Int              = 0
    dynamic var name : String         = ""
    dynamic var imageURL : String     = ""
    dynamic var coverImageURL : String = ""
    dynamic var totalPlayCount : Int  = 0
    dynamic var totalFavCount : Int   = 0
    dynamic var createdAt : NSDate    = NSDate()
    dynamic var updatedAt : NSDate    = NSDate()

    var guides : [Guide] {        
        return linkingObjects(Guide.self, forProperty: "navigator")
    }

    override class func primaryKey() -> String {
        return "id"
    }

    override static func indexedProperties() -> [String] {
        return ["name", "imageURL", "totalPlayCount", "totalFavCount"]
    }

    // Mark: - ObjectMapper

    required convenience init?(_ map: Map) {
        self.init()
    }

    func mapping(map: Map) {
        id             <- map["id"]
        name           <- map["name"]
        imageURL       <- map["avatar_url"]
        coverImageURL  <- map["cover_url"]
        totalPlayCount <- map["listen_count"]
        totalFavCount  <- map["favorite_count"]
        createdAt      <- (map["created_at"], ISO8601DateTransform())
        updatedAt      <- (map["updated_at"], ISO8601DateTransform())
    }
}

this class works correctly.

import RealmSwift
import ObjectMapper

class Guide: Object, Mappable {

    dynamic var id : Int                = 0
    dynamic var title : String          = ""
    dynamic var spotName : String       = ""
    dynamic var placeId : String        = ""
    dynamic var explanation : String    = ""
    dynamic var category : String       = ""
    dynamic var totalPlayCount : Int    = 0
    dynamic var totalFavCount : Int     = 0
    dynamic var latitude : Double       = 0.0
    dynamic var longitude : Double      = 0.0
    dynamic var createdAt : NSDate      = NSDate()
    dynamic var updatedAt : NSDate      = NSDate()

    dynamic var navigator: Navigator?
    var relatedGuides = List<Guide>()

    override class func primaryKey() -> String {
        return "id"
    }

    // インデックス設定
    override static func indexedProperties() -> [String] {
        return ["name", "category", "firstImageUrl", "totalPlayCount"]
    }

    //  override static func ignoredProperties() -> [String] {
    //    return []
    //  }

    // Mark: - ObjectMapper

    required convenience init?(_ map: Map) {
        self.init()
    }

    func mapping(map: Map) {
        id             <- map["id"]
        title          <- map["name"]
        spotName       <- map["spot.name"]
        explanation    <- map["description"]
        category       <- map["category.name"]
        totalPlayCount <- map["listen_count"]
        totalFavCount  <- map["favorite_count"]
        latitude       <- map["geometry.latitude"]
        longitude      <- map["geometry.longitude"]
        createdAt      <- (map["created_at"], ISO8601DateTransform())
        updatedAt      <- (map["updated_at"], ISO8601DateTransform())
    }
}

so i'm confused what to do next.
someone please give me advices.

[tristanhimmelman]

Hi there, I just tested this code and I am not getting any errors. Are you still having this problem?

[Andr3y-]

I have exactly the same problem:

import ObjectMapper
import RealmSwift

class WRUser: Object, Mappable {

    dynamic var ID: Int = 0
    dynamic var email: String = ""

    // MARK: - Init

    required convenience init?(_ map: Map) {
        self.init()
    }

    func mapping(map: Map) {
        ID <- map["user.id"]
        email <- map["user.email"]
    }

}

Actually building a project gives an error: Must call a designated initializer of the superclass "WRUser"

Any thoughts?

UPDATE:
The problem occurs only if I create a subclass of WRUser, say WRUserClient. As long as WRUser is a class that has no subclasses, the project compiles.

@nashirox did you subclass?

Any idea why does this happen?

[mrbagels]

Having same issue with a subclass of another mappable object. This issue says closed but there does not appear to be a solution?

[adipurnama]

Hi,
I also having same error when subclassing mappable object.
The working solution for me is by adding init method (same as parent class)

So, in above case :

class WRUserSubclass: WRUser {

    required convenience init?(_ map: Map) {
        self.init()
    }

    func mapping(map: Map) {
        // extended mapping here
    }
}

Hope this help