baoshi-was/app/OwnerPriceDirectLogisticCar.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class OwnerPriceDirectLogisticCar extends ModelExtended
{
    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");
    }
}