baoshi-was/app/OwnerPriceDirectLogisticCar.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use App\Traits\ModelLogChanging;

class OwnerPriceDirectLogisticCar extends Model
{
    use ModelLogChanging;

    protected $fillable = [
        "owner_price_direct_logistic_id",   //直发车计费ID
        "car_type_id",                      //车型ID
        "base_fee",                         //起步费
        "additional_fee",                   //续费(元/KM)
    ];

    public function carType()
    {   //车型
        return $this->hasOne(CarType::class,"id","car_type_id");
    }
    public function ownerPriceDirectLogistic()
    {   //直发车计费
        return $this->belongsTo(OwnerPriceDirectLogistic::class,"owner_price_direct_logistic_id","id");
    }
}