SwiftUI How can I pass in data into an ObservedObject function - swift

Question

I am new to SwiftUI and Swift . I got a Search Bar and a Listview whenever a user types something in the searchbar I do an http request and new data comes in . The issue is that the list is not updating with the new data and I think I know why . I need to pass my SearchBar response into the ObservedObject variable . I was reading this swiftui ObservedObject function call in all view however I still didn't find my answer . This is my code
struct RegistrationView: View {
#State private var searchTerm: String = ""
#State var txt = "" // Txt has the SearchBar text
#ObservedObject var getData = datas(location: "") // I need to pass it here
var body: some View {
VStack {
Text("Registration")
searchView(txt: $txt)
// datas(location: txt)
NavigationView {
List(getData.jsonData.filter{ txt == "" ? true : $0.name.localizedCaseInsensitiveContains(txt)}) { i in
ListRow(name: i.name,statelong: i.statelong)
}
}
.padding(.top, 5.0)
}
}
}
class datas: ObservableObject
{
#Published var jsonData = [datatype]()
init(location: String) {
let session = URLSession(configuration: .default)
if location == "" {
return
}
let parameter = "location=\(location)"
if location == "" {
return
}
let url = URL(string:"url")!
let request = RequestObject(AddToken: true, Url: url, Parameter: parameter)
session.dataTask(with:request, completionHandler: {(data, response, error) in
do
{
if data != nil
{
let fetch = try JSONDecoder().decode([datatype].self, from: data!)
DispatchQueue.main.async {
self.jsonData = fetch
print(fetch)
}
}
}
catch
{
print(error.localizedDescription)
}
}).resume()
}
}
In the above code I want to pass in the txt variable into the getData variable or do something like this #ObservedObject var getData = datas(location: txt) . When the SearchBar is updated then txt gets whatever is inserted into the SearchBar .
If I do something like this
#ObservedObject var getData = datas(location: "Me")
Then the list will update and correctly have everything that starts with Me my only issue is getting the SearchBar value inside datas so I don't have to hardcode things . As stated before I need to pass in txt to datas . Any help would be great

Answer 1

You don't need to init the class with that variable. You can just make a function for that and fetch it when ever you need. It could be just once.
class datas: ObservableObject {
#Published var jsonData = [datatype]()
func get(location: String) {
let session = URLSession(configuration: .default)
guard !location.isEmpty else { return }
let parameter = "location=\(location)"
let url = URL(string:"url")!
let request = RequestObject(AddToken: true, Url: url, Parameter: parameter)
session.dataTask(with:request, completionHandler: {(data, response, error) in
do {
guard data != nil else { return }
let fetch = try JSONDecoder().decode([datatype].self, from: data!)
DispatchQueue.main.async {
self.jsonData = fetch
print(fetch)
}
} catch {
print(error.localizedDescription)
}
}).resume()
}
}