laravel_sketch/app/Models/Goods/GoodsCategoryMap.php

<?php

namespace App\Models\Goods;

use App\Base\BaseModel;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * App\Models\Goods\GoodsCategoryMap
 *
 * @property int                             $id
 * @property int                             $goods_id
 * @property int                             $category_id
 * @property int                             $is_public 是否对普通会员展示
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap newQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap query()
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap whereCategoryId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap whereGoodsId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap whereIsPublic($value)
 * @method static \Illuminate\Database\Eloquent\Builder|GoodsCategoryMap whereUpdatedAt($value)
 * @mixin \Eloquent
 * @property-read \App\Models\Goods\Category|null $category
 * @property-read \App\Models\Goods\Goods|null $goods
 */
class GoodsCategoryMap extends BaseModel
{
    protected $table = "goods_category_map";
    protected $fillable = ['goods_id', "category_id", "is_public"];

    public function format(...$options)
    {

    }

    public function category()
    {
        return $this->belongsTo(Category::class);
    }

    public function goods()
    {
        return $this->belongsTo(Goods::class);
    }
}