SwiftUI: How to get value from TextField presented in a bottom sheet base on a value related to the selected item on the list?

This is how it look in the app:

On the left there is a simple list created from ForEach. When user tap any element on that list BottomSheet is presented with a Binded value for selected item. How can I get that value and update NSManagedObject in core data when user tap save button? Is there a simple and easy way to do this?

The same situation in code:

struct SettingsView: View {
    @State var isTextInputPresented = false
    @State var editingTextFieldValue = ""
    private var onSave: ((String) -> Void)? = nil

    var body: some View {
        ZStack {
            ScrollView {
              ForEach(users, id: \.self) { user in //users are from @FetchRequest
                HStack {
                    TextLabel(user.name, color: theme.secondTeamColor)
                        .padding(EdgeInsets(vertical: 10))
                    Spacer()
                }
                .onTapGesture {
                    editingTextFieldValue = user.name
                    isTextInputPresented = true
                    // cannot assign onSave handler here🤷🏼‍♂️
                }
              }
            }
            BottomSheetView(title: "Edit input", isShowing: $isTextInputPresented) {
                TextInputView(text: $editingTextFieldValue, onSave: onSave)
            }
        }
    }
}


import SwiftUI

struct TextInputView: View {
    @Environment(Theme.self) private var theme
    @Binding var text: String
    @FocusState private var focus: Bool
    var onSave: ((String) -> Void)?
    var body: some View {
        HStack(spacing: 20) {
            TextField("", text: $text, prompt: Text("Placeholder").foregroundColor(.gray))
                .padding(10)
                .multilineTextAlignment(.center)
                .font(.system(size: 24))
                .foregroundStyle(theme.backgroundColor)
                .tint(theme.backgroundColor.opacity(0.4))
                .focused($focus)
                .cornerRadius(10)
                .overlay(
                    RoundedRectangle(cornerRadius: 10)
                        .stroke(theme.backgroundColor.opacity(0.5), lineWidth: 3)
                )
            Button {
                onSave?(text)
            } label: {
                Image(systemName: "checkmark")
            }
            .font(.bold(withSize: 22))
            .frame(width: 56, height: 56)
            .background(theme.backgroundColor)
            .foregroundStyle(theme.textColor)
            .cornerRadius(10)
        }
        .padding(20)
        .onAppear {
            focus = true
        }
    }
}

You could try this approach declaring @State private var onSave: ((String) -> Void)? = nil and using onSave in the .onTapGesture as shown in the example code:

struct SettingsView: View {
    @State private var isTextInputPresented = false
    @State private var editingTextFieldValue = ""
    @State private var onSave: ((String) -> Void)? = nil // <--- here

    // for my testing
    let users = [User(name: "user-1"), User(name: "user-2")]
    
    var body: some View {
        ZStack {
            ScrollView {
                ForEach(users) { user in // users are from @FetchRequest
                    HStack {
                        Text(user.name)
                        Spacer()
                    }
                    .onTapGesture {
                        editingTextFieldValue = user.name
                        isTextInputPresented = true
                        onSave = { newName in
                            // save newName back to CoreData
                            print("----> saving: \(newName)")
                        }
                    }
                }
            }
            // for my testing
            .sheet(isPresented: $isTextInputPresented) {
                TextField("Edit input", text: $editingTextFieldValue)
                    .onSubmit {
                        onSave?(editingTextFieldValue)
                        isTextInputPresented = false
                    }
            }
//            BottomSheetView(title: "Edit input", isShowing: $isTextInputPresented) {
//                TextInputView(text: $editingTextFieldValue, onSave: onSave)
//            }
        }
    }
}

EDIT-1

using the TextInputView and a @Binding var onSave ...

struct SettingsView: View {
    @State private var isTextInputPresented = false
    @State private var editingTextFieldValue = ""
    @State private var onSave: ((String) -> Void)? = nil // <--- here

    // for my testing
    let users = [User(name: "user-1"), User(name: "user-2")]
    
    var body: some View {
        ZStack {
            ScrollView {
                ForEach(users) { user in // users are from @FetchRequest
                    HStack {
                        Text(user.name)
                        Spacer()
                    }
                    .onTapGesture {
                        editingTextFieldValue = user.name
                        isTextInputPresented = true
                        onSave = { newName in
                            // save newName back to CoreData
                            print("----> saving: \(newName)")
                        }
                    }
                }
            }
            // for testing using TextInputView
            .sheet(isPresented: $isTextInputPresented) {
                TextInputView(text: $editingTextFieldValue, onSave: $onSave) // <--- here
            }
        }
    }
}

struct TextInputView: View {
    @Environment(Theme.self) private var theme
    @Binding var text: String
    @FocusState private var focus: Bool
    @Binding var onSave: ((String) -> Void)?  // <--- here
    
    var body: some View {
        //...
    }
}