Swift : retrieving struct values in swiftui view is not working - swift

Question

I am new to swift and need to define some form of Global Dictionary that I can access the content throughout my project. My understanding is that struct class can be used for that so
I created a struct and appended values to it, now I want to access each of those values in view
this is my product struct
struct Product {
let name: String
let aisleNo:Int
let location_section: Int
let location_zone: String
let productPrice: Int
}
then created a global
import Foundation
struct Global {
static var productList = [Product]()
}
this is how I append many products to Product
class SearchResult : ObservableObject {
var productList = [Product]()
//There could be hundreds of product in the array
for product in productArray {
let productName = product.productName!
let aisleNo = product.productLocation_aisle.value!
let location_section = product.productLocation_section.value!
let location_zone = product.productLocation_zone!
let productPrice = product.productPrice.value!
let product_real_id = product._id!
Global.productList.append(Product(name: productName, aisleNo: aisleNo, location_section: location_section, location_zone: location_zone, productPrice: Int(productPrice)))
}
this is my search result view where I want to display the content of the Product
struct SearchResultView: View {
var searchResults = Global.productList
var body: some View {
VStack {
List {
ForEach(model.searchResults, id: \.self) { text in
Text(text)
}
}
}
}
}
I can seem to get it to show in the searchResultView. What am doing wrong ?
I keep getting this error
Generic struct 'ForEach' requires that 'Product' conform to 'Hashable'
Initializer 'init(_:)' requires that 'Product' conform to 'StringProtocol'

Answer 1

You need to set "searchResults" equal to your "productList"
Right now your searchResults is EMPTY. It simply exists as an instance of your struct with no data in it.
one option is to make the variable scope global and then set your new variable = to it
self.searchResults = Global.productList
--EDIT
You are close.
Where you set your var here
var searchResults = Global.productList
it needs to be like this.
var searchResults = [Product]() // ->Creates an instance of the struct object
Then set it equal to your global array.
self.searchResults = Global.productList
ALSO you should remove you redundant variable var productList = [Product]()
Furthermore, some things to note
for product in productArray {
let productName = product.productName!
let aisleNo = product.productLocation_aisle.value!
let location_section = product.productLocation_section.value!
let location_zone = product.productLocation_zone!
let productPrice = product.productPrice.value!
let product_real_id = product._id!
Global.productList.append(Product(name: productName, aisleNo: aisleNo, location_section: location_section, location_zone: location_zone, productPrice: Int(productPrice)))
}
you are doing extra work by using all the let variables.
A better way is doing it like so.
for product in productArray {
Global.productList.append(Product(name: product.name, aisleNo: product.aisleNo, location_section: product.location_section, location_zone: product.location_zone, productPrice: Int(product.productPrice)))
}
EDIT - Hashable Erorr
try this out
struct Product: Hashable {
let name: String
let aisleNo:Int
let location_section: Int
let location_zone: String
let productPrice: Int
}