获取另一个表数据以显示在下拉列表 Laravel

Question

我是 Laravel 的新手，我正在制作一个表格来记录用户当天的驾驶活动。我有 2 张桌子。一张vehicle 表和我的主要vehiclelog 表。 vehicle 表应包含有关车辆的详细信息列表。在我的主 (vehiclelog) 表单中，用户必须输入一个名称，然后从下拉列表中选择一个车辆，该车辆将拉出 reg_number 列并将其显示在该下拉列表中。 我有以下代码，但它返回 Attempt to read property "id" on string 错误。我不确定我做错了什么。有人可以帮忙吗？

我的控制器：

class MaintenanceController extends Controller
{
    public function index()
    {

        $energy = Maintenance::orderBy('id', 'desc')->paginate(5);
        $cars = Vehicle::where('id', 1)->pluck('reg_number', 'car_model');
        return view('admin.vmaintenance', compact('energy','cars'));
    }
    public function store(Request $request)
    {

        $energy = new Maintenance;
        $cars = Vehicle::all();

        $energy->smsstaff_key = $request->input('technician');
        $cars->reg_number = $request->input('vehicle_id');
        $energy->log_dt = $request->input('log_dt');
        $energy->admin_time = $request->input('admin_time');
        $energy->driving_time = $request->input('driving_time');
        $energy->work_time = $request->input('work_time');
        $energy->jobcard_count = $request->input('jobcard_count');
        $energy->start_odo = $request->input('start_odo');
        $energy->end_odo = $request->input('end_odo');


        $energy->save();
        return redirect('/vmaintenance')->with('success', 'data added');
    }
}

我的模型：

车型：

class Vehicle extends Model
{
    public $timestamps = false;
    protected $table = 'vehicle';
    protected $primaryKey = 'id';
   
    protected $guarded = ['id'];
    use HasFactory;
}

能源模型：

class Energy extends Model
{
    public $timestamps = false;
    protected $table='energystores';
    protected $primaryKey = 'energystore_key';
    
    use HasFactory;
}

视图中的下拉菜单：

  <label>Select Vehicle</label>
  <select name="vehicle_id" >
  @foreach($cars as $car)
  <option value="{{ $car->id }}">{{ $car->reg_number }}</option>
  @endforeach
  </select>

Answer 1

代替：

$cars = Vehicle::where('id', 1)->pluck('reg_number', 'car_model');

使用这个：

$cars = Vehicle:pluck('reg_number', 'id');