获取即将到来的 Stripe 发票以按比例更改数量

Question

我想了解使用 Stripe 更改订阅数量的费用。我找到了Upcoming API，它看起来应该可以工作，但我无法计算出正确的参数组合来传递给它。

这会返回错误You must pass one of plan, price, or price_data.：

$this->stripe->invoices->upcoming([
    'customer' => $this->stripe_id,
    'subscription' => $this->subscription_id,
    'subscription_items' => [[
      'quantity' => $quantity
    ]]
 ]

但是当我添加价格 ID 时，如下所示，我收到错误 Cannot add multiple subscription items with the same plan: price_1H...

$this->stripe->invoices->upcoming([
    'customer' => $this->stripe_id,
    'subscription' => $this->subscription_id,
    'subscription_items' => [[
        'price' => $this->price_id,
        'quantity' => $quantity
    ]]
]));

删除订阅 ID 后只会返回全新订阅的费用，而不是现有订阅的按比例分配的发票。

Answer 1

与往常一样，在发布问题两秒钟后，我解决了问题 - 除了传递订阅 id 之外，还需要传递订阅项的 id，这是我通过这个 sn-p 完成的：

$subscription = $this->stripe->subscriptions->retrieve($this->subscription_id);
$this->stripe->invoices->upcoming([
    'customer' => $this->stripe_id,
    'subscription' => $this->subscription_id,
    'subscription_items' => [[
        'id' => $subscription->items->data[0]->id,
        'quantity' => $quantity
    ]]
]);