baoshi-was/app/StationTaskMaterialBox.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use App\Traits\LogModelChanging;

class StationTaskMaterialBox extends Model
{
    use LogModelChanging;

    protected $fillable=['station_id','material_box_id','status'];

    public function materialBox()
    {   //料箱
        return $this->hasOne(MaterialBox::class,"id","material_box_id");
    }
    function parentTask(){
        return $this->morphOne(StationTask::class,'station_taskable');
    }
}