How to fetch data from nested array from API in SwiftUI? - arrays

Question

this is my Model
public struct Welcome: Decodable{
public let userslist: [Userslist]
}
public struct Userslist: Decodable, Hashable{
public let full_name: String
public let partner_media: [PartnerMedia]
public init( partner_media: [PartnerMedia]) {
self.partner_media = partner_media
}
}
public struct PartnerMedia: Decodable , Hashable{
public var id = UUID()
public let url: String
public init( url: String) {
self.url = url
}
}
This is View Model I follow the MVVM pattern for accessing the data from API.
class PublisherModelVM: ObservableObject {
#Published var datas = [PartnerMedia]()
let url = "APIUrl"
init() {
getData(url: url)
}
func getData(url: String) {
guard let url = URL(string: url) else { return }
URLSession.shared.dataTask(with: url) { (data, _, _) in
if let data = data {
do {
let results = try JSONDecoder().decode(Welcome.self, from: data)
DispatchQueue.main.async {
self.datas = results.userslist `//Cannot assign value of type '[Userslist]' to type '[PartnerMedia]' what should I write for getting proper response`
}
}
catch {
print(error)
}
}
}.resume()
}
}
I want to fetch the url and full_name And set to the View
struct PublisherListView: View{
#StateObject var list = PublisherModelVM()
var body: some View{
ScrollView(.horizontal,showsIndicators: false){
ForEach(list.datas, id: \.id){ item in
Text(item.full_name)
AsyncImage(url: URL(string: item.url)){image in
image
.resizable()
.frame(width: 235, height: 125).cornerRadius(8)
}placeholder: {
Image(systemName: "eye") .resizable()
.frame(width: 235, height: 125).cornerRadius(8)
}
}
}
}
}
this Error show in my Xcode Cannot assign value of type '[Userslist]'
to type '[PartnerMedia]'
Please help me.
can anyone help me for recommending for API related full detailed
courses and thank you in advance

Answer 1

As I said before (in the questions you have deleted) pay attention to the details of your models to match the json data. Try this approach, works very well for me:
struct ContentView: View {
var body: some View {
PublisherListView()
}
}
struct ServerResponse: Decodable {
let userslist: [User]
}
struct User: Decodable, Identifiable {
let id: Int
let totalBooks: Int
let totalfollowers: Int
let fullAddress: String?
let partnerMedia: [PartnerMedia]
enum CodingKeys: String, CodingKey {
case id, totalBooks,totalfollowers
case partnerMedia = "partner_media"
case fullAddress = "full_address"
}
}
struct PartnerMedia: Decodable, Identifiable {
let id: Int
let url: String
}
struct PublisherListView: View{
#StateObject var list = PublisherModelVM()
var body: some View{
ScrollView(.horizontal,showsIndicators: false){
HStack(spacing:15) {
ForEach(list.datas, id: \.id){ item in
AsyncImage(url: URL(string: item.url)){ image in
image
.resizable()
.frame(width: 235, height: 125).cornerRadius(8)
} placeholder: {
Image(systemName: "eye") .resizable()
.frame(width: 235, height: 125).cornerRadius(8)
}
}
}
}
}
}
class PublisherModelVM: ObservableObject {
#Published var datas = [PartnerMedia]()
let url = "https://alibrary.in/api/publisherList"
init() {
getData(url: url)
}
func getData(url: String) {
guard let url = URL(string: url) else { return }
URLSession.shared.dataTask(with: url) { (data, _, _) in
if let data = data {
do {
let results = try JSONDecoder().decode(ServerResponse.self, from: data)
DispatchQueue.main.async {
for user in results.userslist {
self.datas.append(contentsOf: user.partnerMedia)
}
}
}
catch {
print(error)
}
}
}.resume()
}
}