<?php

namespace App\Models\business;

use App\BaseApp\BaseBusinessModel;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * 套餐搭配明细（cc_package_item）
 *
 * 每行必须带 price_sheet_id，否则一件加入清单后无法按规格下单。
 */
class PackageItemModel extends BaseBusinessModel
{
    protected $table = 'package_item';

    protected $guarded = [];

    public function package(): BelongsTo
    {
        return $this->belongsTo(PackageModel::class, 'package_id', 'id');
    }

    public function catalogue(): BelongsTo
    {
        return $this->belongsTo(CatalogueModel::class, 'catalogue_id', 'id');
    }

    public function priceSheet(): BelongsTo
    {
        return $this->belongsTo(PriceSheetModel::class, 'price_sheet_id', 'id');
    }
}