Need to show a button that is always visible and which action relies on a value, but disabled if the value is missing? Use UnwrappingButton for an easy solution.

UnwrappingButton.swift

import SwiftUI

struct UnwrappingButton<Label: View, T>: View {
    
    enum Unwrapping<T> {
        case element(value: T?, action: (T) -> Void)
        case binding(value: Binding<T?>, action: (Binding<T>) -> Void)
        
        var value: T? {
            switch self {
            case .element(let value, _):
                return value
            case .binding(let value, _):
                return value.wrappedValue
            }
        }
        
        func run() {
            switch self {
            case .element(let value, let action):
                if let value = value {
                    action(value)
                }
            case .binding(let value, let action):
                if let value = Binding(value) {
                    action(value)
                }
            }
        }
    }
    
    let unwrapping: Unwrapping<T>
    @ViewBuilder let label: Label
    
    init(element: T?, action: @escaping (T) -> Void, @ViewBuilder label: () -> Label) {
        self.unwrapping = .element(value: element, action: action)
        self.label = label()
    }
    
    init(element: Binding<T?>, action: @escaping (Binding<T>) -> Void, @ViewBuilder label: () -> Label) {
        self.unwrapping = .binding(value: element, action: action)
        self.label = label()
    }
    
    var body: some View {
        Button {
            unwrapping.run()
        } label: {
            label
        }
        .disabled(unwrapping.value == nil)
    }
}

extension UnwrappingButton where Label == Text {
    init(element: T?, title: String, action: @escaping (T) -> Void) {
        self.unwrapping = .element(value: element, action: action)
        self.label = Text(title)
    }
    
    init(element: Binding<T?>, title: String, action: @escaping (Binding<T>) -> Void) {
        self.unwrapping = .binding(value: element, action: action)
        self.label = Text(title)
    }
}