我的路由组是否适用于需要正确编写管理员角色的路由？

I'm trying to remove the admin middleware from specific routes and create a Route::group for admin routes only but I'm not sure if I'm doing it correctly.

I'm trying to turn this:

Route::get('/admin', [
    'uses' => 'PagesController@admin',
    'as' => 'admin',
    'middleware' => 'roles',
    'roles' => 'Admin'
]);

Into this:

Route::group(['middleware' => ['roles'], 'roles' => ['admin']], function(){
    Route::get('/admin', 'pagesController@admin')->name('admin');
});

So this route group is meant to only pass people who have the role of admin to the routes. I believe it is working but I really wanna check if I have made the change correctly.

Middleware:

class CheckRole
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if ($request->user() === null){
            return redirect()->route('home');
        }
        $actions = $request->route()->getAction();
        $roles = isset($actions['roles']) ? $actions['roles'] : null;
        if ($request->user()->hasAnyRole($roles) || !$roles ) {
                return $next($request);
        }
        return redirect()->route('home');
    }
}