Not able to parse variable other than string using Moya in swift

Question

I am working on an iOS project in Swift. I used Moya framework for API handling and parsing. It works perfectly. But when I try to parse varibles other than string it shows me en error:

"Missing argument for parameter 'transformation' in call"

Here is my mapper class

import Mapper

class MyMapperClaa:Mappable {
    var dateVariable: NSDate?

    required init(map: Mapper) throws{
        try dateVariable = map.from("date")
    }
}

Answer 1

sorry, you are using this lib: https://github.com/lyft/mapper. from example there:

private func extractDate(object: Any?) throws -> Date {
  guard let rawDate = object as? String else {
    throw MapperError.convertibleError(value: object, type: Date.self)
  }
    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "your date format"

    if let date = dateFormatter.date(from: rawDate)  {
        return date
    } else {
      throw MapperError.convertibleError(value: object, type: Date.self)
    }

}

struct DateModel: Mappable {
  let date: Date

  init(map: Mapper) throws {
    try date = map.from("date", transformation: extractDate)
  }
}