(laravel ) checkbox toggle is not working. And Changing text do not working either.What's wrong with mycode? - laravel-8

Question

I am new to laravel and creating todo list.
I try to toggle checkbox.
BUt in checked method(the bottom of PostController), I can't even change text in the first place.
What's wrong with checked method?
I expect a problem in web.php.
I'm using laravel8.
thankyou for your help!
What's wrong with checked method?
(((PostController.php)))
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\Post;
use App\Http\Requests\PostRequest;
class PostController extends Controller
{
public function index()
{
$posts = Post::latest()->get();
return view('index')
->with(['posts' => $posts]);
}
public function show(Post $post)
{
return view('posts.show')
->with(['post' => $post]);
}
public function checked(Post $post)
{
// $post->is_done = !$post->is_done;
$post->title = 'hogehoge';
$post->save();
return redirect()
->route('posts.index');
}
}
(((web.php)))
use Illuminate\Support\Facades\Route;
use App\Http\Controllers\PostController;
Route::get('/', [PostController::class, 'index'])
->name('posts.index');
Route::get('/posts/{post}', [PostController::class, 'show'])
->name('posts.show')
->where('post', '[0-9]+');
Route::patch('/posts/{post}/checked', [PostController::class, 'checked'])
->name('posts.checked')
->where('post', '[0-9]+');
(((post table column)))
public function up()
{
Schema::create('posts', function (Blueprint $table) {
$table->id();
$table->string('title');
$table->text('body');
$table->boolean('is_done')->default(false);
$table->timestamps(); // created_at, updated_at
});
}