Codable with noisy JSON response [closed] - json

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Generally, I understand how Codable works. A simple example would be:
[
{
"id": 1,
"name": "Paul",
"photo": {
"id": 48,
"url": "https://..."
}
},
{
"id": 2,
"name": "Andrew",
"photo": {
"id": 389,
"url": "https://..."
}
}
]
which would require two simple structs:
struct User: Codable {
var id: Int
var name: String
var photo: Photo
}
struct Photo: Codable {
var id: Int
var url: String
}
Given the example above, my API's response json comes in a more complicated format:
{
"data": [
{
"data": {
"id": 1,
"attributes": {
"name": "Paul"
},
"relationships": {
"photo": {
"data": {
"id": 48,
"attributes": {
"url": "https://..."
}
}
}
}
}
},
{
"data": {
"id": 2,
"attributes": {
"name": "Andrew"
},
"relationships": {
"photo": {
"data": {
"id": 389,
"attributes": {
"url": "https://..."
}
}
}
}
}
}
]
}
I've played around with SwiftyJSON to pre-parse / flatten the json by removing all the noise and trying to make the format like in the first json example. However, I feel like there's probably a better, more obvious way to do it, and manipulating the json seems very error prone.
I've read about CodingKeys, but at this point, that's almost as much extra work as it would be to parse the json all manually using SwiftyJSON.
Does anyone know how to do this efficiently?

Answer 1

Use quicktype.io to generate the response models for you from the specified JSON.
import Foundation
// MARK: - Root
struct Root: Codable {
let data: [Datum]
}
// MARK: - Datum
struct Datum: Codable {
let data: DatumData
}
// MARK: - DatumData
struct DatumData: Codable {
let id: Int
let attributes: PurpleAttributes
let relationships: Relationships
}
// MARK: - PurpleAttributes
struct PurpleAttributes: Codable {
let name: String
}
// MARK: - Relationships
struct Relationships: Codable {
let photo: Photo
}
// MARK: - Photo
struct Photo: Codable {
let data: PhotoData
}
// MARK: - PhotoData
struct PhotoData: Codable {
let id: Int
let attributes: FluffyAttributes
}
// MARK: - FluffyAttributes
struct FluffyAttributes: Codable {
let url: String
}
let root = try JSONDecoder().decode(Root.self, from: jsonData)