ProductsItem

产品记录（读字段白名单：id, product_name, category, price, stock, status, created_at）

{
    "id": 0,
    "product_name": "string",
    "category": "string",
    "price": 0,
    "stock": 0,
    "status": "active",
    "created_at": "2019-08-24T14:15:22.123Z"
}