条纹 API 发票费用为空

Question

这是我的条纹订阅：

subscription = Stripe::Subscription.retrieve('sub_I4wF')

当用户降级refund未使用的余额customer through refund.

创建退款文档说In the API call, include the charge ID to refund.

我试图从subscription.latest_invoice获取费用 ID

 latest_invoice = Stripe::Invoice.retrieve(subscription.latest_invoice) 

但费用 id 为空"charge": null,

#<Stripe::Invoice:0x3fc07bb95a20 id=in_1HUmNoHHVd> JSON: {
  "id": "in_1HUmNoHHVdsLap10",
  "object": "invoice",
  "account_country": "AU",
  "account_name": null,
  "amount_due": 0,
  "amount_paid": 0,
  "amount_remaining": 0,
  "application_fee_amount": null,
  "attempt_count": 0,
  "attempted": true,
  "auto_advance": false,
  "billing_reason": "subscription_update",
  "charge": null,
  "collection_method": "charge_automatically",
  "created": 1600922920,

Answer 1

该发票是零美元发票，因此无需支付任何费用，因为无需退款。