baoshi-was/app/OwnerPriceExpress.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class OwnerPriceExpress extends Model
{
    protected $fillable = [
        "name",                     //名称
        "initial_weight_unit_id",   //首重单位
        "additional_weight_unit_id",//续重单位
    ];

    public function owners()
    {   //货主
        $this->belongsToMany(Owner::class,"owner_price_express_owner","owner_price_express_id","owner_id");
    }
    public function logistics()
    {   //物流
        $this->belongsToMany(Logistic::class,"owner_price_express_logistic","owner_price_express_id","logistic_id");
    }
}