Laravel 5.4:如何通过中间件将模型对象传递给控制器？

php artisan make:middleware ModelMiddleware

public function handle($request, Closure $next)
{
    $model = new Model(); // 替换为你的模型类名
    $modelObject = $model->find($request->id); // 通过请求中的id获取模型对象
    $request->merge(['modelObject' => $modelObject]); // 将模型对象添加到请求中
    return $next($request);
}

protected $routeMiddleware = [
    // 其他中间件...
    'model' => \App\Http\Middleware\ModelMiddleware::class,
];

public function index(Request $request)
{
    $modelObject = $request->modelObject; // 获取中间件传递的模型对象
    // 其他操作...
}