Can't access array from JSON in for each loop - json

Question

In my project I can't access the "Floor" to be used in for each loop. I need to count floors of a bulding in the loop.
// MARK: - UcmData
struct UcmData: Codable {
let buildings: [Building]
}
// MARK: - Building
struct Building: Codable {
let id: Int
let title, subtitle, info, image: String
let floor: [Floor]
}
// MARK: - Floor
struct Floor: Codable {
let number: Int
let title, subtitle, image: String
}
import SwiftUI
import Foundation
struct NamJHerduView: View {
let ucmData = Bundle.main.decode(UcmData.self, from: "ucm_data.json")
var body: some View {
ScrollView {
VStack {
ForEach(0 ..< ucmData.) //here i need to count floors and use maybe where clause to filter just floors from a special building

Answer 1

Add Identifiable conformance
struct Building: Codable, Identifiable {
Now you can loop through buildings
ForEach(ucmData.buildings) { building in
Text("Number of floors in \(building.title): \(building.floors.count)")
}
If you also need to access the index in the loop, see this answer: How do you use .enumerated() with ForEach in SwiftUI?

Answer 2

I think you may want to organize your data so that it is nested like this:
// MARK: - UcmData
struct UcmData: Codable {
let buildings: [Building]
// MARK: - Building
struct Building: Codable {
let id: Int
let title, subtitle, info, image: String
let floor: [Floor]
// MARK: - Floor
struct Floor: Codable {
let number: Int
let title, subtitle, image: String
}
}
}
Then each building will have a floor array.