public function add(Request $request)
{
$field = new HardwareField();
$field->name = $request->input('name');
$hardware = Hardware::find($request->input('hardware_id'));
$field->hardware()->associate($hardware);
$field->save();
return redirect()->to(route('hardware.profile', ['id' => $hardware->id]))->with('message_content', '添加成功!')->with('message_type', 'info');
}
