Convert Arraylist of some Class type into JSON format using Swift

Question

I want to hit an api using Alamofire in which I have to pass parameters as :

"reminder":
[
  {
    "isAlarmOn": "true",
    "time": "06:29 PM"
  },
  {
    "isAlarmOn": "true",
    "time": "06:30 AM"
  }
]

For achieving this, I Created an Array as

var reminderArray : [AlarmRequestModel] = [AlarmRequestModel]()

where AlarmRequestModel is Like ,

AlarmRequestModel.swift

import Foundation
class AlarmRequestModel {
    var time : String = "12:00 PM"

    init(time : String){
        if !time.isEmpty{
            self.time = time
        }

    }
}

and filled reminderArray as

func setArray() {
        reminderArray.insert(AlarmRequestModel(time: "5:00 PM"), atIndex: 0)
        reminderArray.insert(AlarmRequestModel(time: "6:00 PM"), atIndex: 1)
        reminderArray.insert(AlarmRequestModel(time: "7:00 PM"), atIndex: 2)
        reminderArray.insert(AlarmRequestModel(time: "8:00 PM"), atIndex: 3)
    }

And while hitting the Api , I Declared the parameters as

 func hitApi()
    {
        let parameters  : [String:AnyObject] = [
            "reminder" : reminderArray.description,
            ]

        print("parmeters : \(parameters)")
    }

But I didn't get the expected output , the output was like ->

 parmeters :["reminder": [My_Swaasth.AlarmRequestModel,My_Swaasth.AlarmRequestModel,My_Swaasth.AlarmRequestModel,My_Swaasth.AlarmRequestModel]]

Please anyone Suggest , What changes Do I Need to do in order to achieve the desired output.

you can also include swiftyJSON github.com/SwiftyJSON/SwiftyJSON — Swift Sharp
– Swift Sharp, Commented Jun 21, 2016 at 11:35

gujci · Accepted Answer · 2016-06-21 11:37:35Z

1

There is a protocoll called CustomStringConvertible which has the

var description: String property

But that won't result the desired output. So I'd rather implement a parameter value for AlarmRequestModel

extension AlarmRequestModel {
     var parameterValue: Dictionary<String, String> {
         return ["isAlarmOn": "true", "time": self.time]
     }
}

And use this like

reminderArray.map() { reminder in return reminder.parameterValue }

here:

    let parameters  : [String:AnyObject] = [
        "reminder" : reminderArray.map() { reminder in return reminder.parameterValue },
        ]

answered Jun 21, 2016 at 11:37

gujci

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2 Comments

Preeti Rani Over a year ago

now m getting this output .. "reminder": <_TtCs21_SwiftDeferredNSArray 0x16c6b2f0>( { time = "9:00 AM"; }, { time = "2:31 PM"; }, { time = "9:00 PM"; } )

gujci Over a year ago

It is because you use [String:AnyObject], you can change it [String:Any] and the output should be good. Otherwise if you want to parse it with NSJSONSerialization.dataWithJSONObject(...) to JSON NSData keep the AnyObject type.

onemillion · Accepted Answer · 2016-06-21 13:56:01Z

0

func hitApi()
{

    var JSONarray: [Dictionary<String,String>] = []

    for (index,_) in reminderArray.enumerate()
    {
        JSONarray.append(["isAlarmOn":"true","time": reminderArray[index].time])
    }

    let bytes = try! NSJSONSerialization.dataWithJSONObject(JSONarray, options: NSJSONWritingOptions.PrettyPrinted)
    var jsonObj = try! NSJSONSerialization.JSONObjectWithData(bytes, options: .MutableLeaves) as! [Dictionary<String, String>]

    print("\"reminder\":\(jsonObj)")
}

You also want to change your Alarm Request Model to this:

class AlarmRequestModel {

    var time : String!

    init(time : String){
        if !time.isEmpty{
            self.time = time
        }

    }   
}

edited Jun 21, 2016 at 13:56

answered Jun 21, 2016 at 12:53

onemillion

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