how do you filter a swiftui table on macos

To filter a SwiftUI table on macOS, you can use the searchable modifier to add a search field to your view. This allows you to filter the content dynamically based on the search term entered by the user. Here’s a basic example of how you can achieve this:

1. Add a State Property: Create a state property to hold the search term.
2. Apply the searchable Modifier: Use the searchable modifier to bind the search term to the search field.
3. Filter the Data: Use the search term to filter the data displayed in the table.

Here’s a simple implementation:

import SwiftUI

struct ContentView: View {
    @State private var searchTerm: String = ""
    let data = ["Apple", "Banana", "Cherry", "Date", "Elderberry", "Fig", "Grape"]

    var filteredData: [String] {
        if searchTerm.isEmpty {
            return data
        } else {
            return data.filter { $0.localizedCaseInsensitiveContains(searchTerm) }
        }
    }

    var body: some View {
        VStack {
            List(filteredData, id: \.self) { item in
                Text(item)
            }
            .searchable(text: $searchTerm)
        }
    }
}

@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

In this example:

• The @State property searchTerm holds the current search text.
• The searchable modifier is applied to the List to bind the search field to searchTerm.
• The filteredData computed property filters the data array based on the searchTerm.

For more detailed information, you can refer to the SwiftUI essentials session, specifically the chapter on built-in capabilities, which covers the searchable modifier and other related features.