Parse JSON string to Model Object type Array - swift3

Question

I got Encrypted data from API hit by below method
URLSession.shared.dataTask(with: url!)
converted data into JSON but still it is encrypted
var json = try(JSONSerialization.jsonObject(with: data!, options: .allowFragments))
converted it into string
let arr:String = json as! String
decrypted it
let jsonText = arr.fromBase64()//extension method, given end of question
now it is in Json Formate as below (this is only 1 record, there are more than 1 records in Json string)
{
"CompanyAlt_Key": 1,
"Company_Name": "XYZ LTD",
"TableName": "CompanyList"
},
I have a model of same type
public class CompanyList {
public var companyAlt_Key : Int?
public var company_Name : String?
public var tableName : String?
}
here is fromBase64 method
func fromBase64() -> String {
let data = NSData.init(base64Encoded: self, options: []) ?? NSData()
return String(data: data as Data, encoding: String.Encoding.utf8) ?? ""
}
I am facing problem to get the Json String into an array of type CompanyList class
Help would be appreciate

Answer 1

You'll need to convert your jsonString to data first:
let jsonData = jsonString.data(using: .utf8)!
The convert the data to an array
let array = JSONSerialization.jsonObject(with: jsonData, options: nil) as? [[String: Any]]
Then iterate through the array…
let companies = array?.map {
return CompanyList(dictionary: $0)
}
Implement an init method for your CompanyList, passing in a dictionary for each record in your response…
public class CompanyList {
public var companyAlt_Key : Int?
public var company_Name : String?
public var tableName : String?
init(dictionary: [String: Any]) {
companyAlt_Key = dictionary["companyAlt_Key"] as? Int
company_Name = dictionary["company_Name"] as? String
tableName = dictionary["tableName"] as? String
}
}
You can also use this to validate the data. If the fields in your class are non-optional, you can use an optional init as follows…
public class CompanyList {
public var companyAlt_Key : Int
public var company_Name : String
public var tableName : String
init?(dictionary: [String: Any]) {
guard let companyAlt_Key = dictionary["companyAlt_Key"] as? Int,
let company_Name = dictionary["company_Name"] as? String,
let tableName = dictionary["tableName"] as? String else {
return nil
}
self.companyAlt_Key = companyAlt_Key
self.company_Name = company_Name
self.tableName = tableName
}
}
If you're using an optional init, use flatMap to ensure you don't have any optional elements in your array…
let companies = array?.flatMap {
return CompanyList(dictionary: $0)
}