baoshi-was/app/OwnerPriceLogistic.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class OwnerPriceLogistic extends Model
{
    protected $fillable = [
        "name",             //名称
        "unit_range",       //单价一区间
        "unit_id",          //单位一ID
        "other_unit_range", //单位二区间
        "other_unit_id",    //单位二ID
        "pick_up_price",    //提货费
        "fuel_price",       //燃油附加费
        "service_price",    //信息服务费
    ];

    public function unit()
    {   //单位一
        return $this->hasOne(Unit::class,"id","unit_id");
    }
    public function otherUnit()
    {   //单位二
        return $this->hasOne(Unit::class,"id","other_unit_id");
    }
    public function owners()
    {   //货主
        return $this->belongsToMany(Owner::class,"owner_price_logistic_owner","owner_price_logistic_id","owner_id");
    }
    public function logistics()
    {   //物流
        return $this->belongsToMany(Logistic::class,"owner_price_logistic_logistic","owner_price_logistic_id","logistic_id");
    }
}