<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class ProductSkuFavorite extends Model
{
    /**
     * @var array
     */
    protected $fillable = [
        'user_id',
        'spu_id',
        'sku_id',
    ];

    /**
     * 此浏览记录所属的商品 sku
     */
    public function sku()
    {
        return $this->belongsTo(ProductSku::class, 'sku_id');
    }
}