Decoding nested JSON with Swift 4 - json

Question

JSON =
{
"html_attributions": [],
"results": [
{
"geometry": {},
"name": "Cruise Bar, Restaurant & Events",
"vicinity": "Circular Quay W, Sydney"
},
{}
],
"status": "OK"
}
How do I retrieve name if it is nested within results?

Answer 1

Sam Try this i write sample code in playground using your Json. root.results will give you array of dictionary, you can easily traverse and get your desired name from it.
import UIKit
struct Root: Codable {
let results: [Results]?
private enum CodingKeys: String, CodingKey {
case results = "results"
}
}
struct Results: Codable {
let name: String?
let vicinity: String?
}
let url = Bundle.main.url(forResource: "data", withExtension: "json")
let data = NSData(contentsOf: url!)
do {
let root = try JSONDecoder().decode(Root.self, from: data as! Data)
if let name = root.results?.first?.name {
print(name)
}
} catch let error as NSError {
print(error.description)
}
Here is the json i have used.
{
"results": [{
"name": "Cruise Bar, Restaurant & Events",
"vicinity": "Circular Quay W, Sydney"
}]
}

Answer 2

You can do it like that:
Model:
import Foundation
struct HtmlInitial: Codable {
let results: [Result]?
let status: String
enum CodingKeys: String, CodingKey {
case results, status
}
}
struct Result: Codable {
let name, vicinity: String?
}
extension HtmlInitial {
init(data: Data) throws {
self = try JSONDecoder().decode(HtmlInitial.self, from: data)
}
}
use model Like that :
let url = Bundle.main.url(forResource: "APIResponse", withExtension: "json")!
if let data = try? Data.init(contentsOf: url) ,
let initial = try? HtmlInitial.init(data: data),
let result = initial.results?[0] {
print(result.name)
}