how to parse following JSON using object mapper

Question

This is the JSON

[{ "start_hour": "08:00:00", "end_hour": "10:00:00", "call_duration": "30" }]

I tried to parse as follows

class DoctorAvailablityResponseData: Mappable {
var startDateHour : String?
var callDuration : Int?
var endDateHour : String?
required init?(_ map: Map){

}

func mapping(map: Map) {
    callDuration <- map["call_duration"]
    endDateHour <- map["end_hour"]
    startDateHour <- map["start_hour"]

  }
}

and

let user = Mapper<ResponseDoctorAvailablity>().map(response.result.value)

But it breaks while parsing , found nil value .

Vignesh Kumar · Accepted Answer · 2016-02-25T05:54:08.833

3

Your data type is wrong. You need to give "DoctorAvailablityResponseData", but you gave ResponseDoctorAvailablity for mapping.

    let user = Mapper<ResponseDoctorAvailablity>().map(response.result.value)

Example

    class Doctor: Mappable {
        var startDateHour : String?
        var callDuration : String?
        var endDateHour : String?
        required init?(_ map: Map){

        }

        func mapping(map: Map) {
            callDuration <- map["call_duration"]
            endDateHour <- map["end_hour"]
            startDateHour <- map["start_hour"]

        }
    }

    // Sample Response
    let response : NSMutableDictionary = NSMutableDictionary.init(object: "08:00:00", forKey: "start_hour");
    response.setValue("10:00:00", forKey: "end_hour");
    response.setValue("30", forKey: "call_duration");

    // Convert response result to dictionary type. It is very easy.
    let userdic = Mapper<Doctor>().map(response) // Map to correct datatype.
    NSLog((userdic?.callDuration)!);

    // If you result is nested object. you will easily get zero index position object and parse it.
    let nestedObjectArray :NSArray = NSArray.init(array: [response]);

    let userArray = Mapper<Doctor>().map(nestedObjectArray[0])


    NSLog((userArray?.callDuration)!);

edited Feb 25 '16 at 05:54

answered Feb 25 '16 at 05:25

Vignesh Kumar

598
4
11

yeah this code working But i don't want to make a dictionary for that , is anything wrong with json ? – Mandeep Kumar Feb 25 '16 at 05:30
i can do this also let user = Mapper().map(response.result.value?.objectAtIndex(0)) – Mandeep Kumar Feb 25 '16 at 05:34
Can you give response.result.value please? – Vignesh Kumar Feb 25 '16 at 05:39
I thought, your response result is nested object. – Vignesh Kumar Feb 25 '16 at 05:44
May be your solution is, let user = Mapper().map(response.result.value[0]) – Vignesh Kumar Feb 25 '16 at 05:49

score 1 · Answer 2 · answered Feb 25 '16 at 04:32

1

As per user JSON 'call_duration' is also string type. Change line

var callDuration : Int?

to:

var callDuration : String?

answered Feb 25 '16 at 04:32

Aruna Mudnoor

4,795
14
16

score 0 · Answer 3 · answered Feb 25 '16 at 04:47

0

You could also wrap them all in a 'guard' statement that way if you do get a nil you can pass in 0 to represent that an item was empty or had no length.

answered Feb 25 '16 at 04:47

Dan Leonard

3,325
1
20
32

problem is not about nil , problem is about way to parse , i am able to parse with nsjsonserialization – Mandeep Kumar Feb 25 '16 at 04:48

score 0 · Answer 4 · answered Feb 25 '16 at 06:11

Your json data looks like an array in which first element is a dictionary.

[{ "start_hour": "08:00:00", "end_hour": "10:00:00", "call_duration": "30" }].

In addition to changing the call_duration type to String? have you tried ensuring that you are actually passing a dictionary and not an array to the map function? Try passing just this and see if it works.

{ "start_hour": "08:00:00", "end_hour": "10:00:00", "call_duration": "30" }

how to parse following JSON using object mapper

4 Answers4