baoshi-was/app/OwnerPriceExpressProvince.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use App\Traits\ModelLogChanging;

class OwnerPriceExpressProvince extends Model
{
    use ModelLogChanging;

    protected $fillable = [
        "owner_price_express_id",   //快递价格ID
        "province_id",              //省份ID
        "initial_weight_price",     //初始单价
        "additional_weight_price",  //续重单价
    ];
    protected $casts = [
        "initial_weight_price" => "array",
        "additional_weight_price" => "array"
    ];

    public function ownerPriceExpress()
    {   //快递计费
        return $this->belongsTo(OwnerPriceExpress::class,"owner_price_express_id","id");
    }
    public function province()
    {   //省份
        return $this->hasOne(Province::class,"id","province_id");
    }
}