nico-thsler_api

[tawny meteor]

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[tall summit]

hi! not sure I follow. What "items" are they? what does your existing code look like? What Stripe API do you use to process the payment?

[safe lagoon]

with items i mean products/prices.

I dont think the existing code should be relevant for this question

[tall summit]

it is a little, since for example if you process the payment using a raw PaymentIntent, that does not accept Prices/Products

if you're using Invoices or CheckoutSessions, you'd simply pass the Prices/Products to those so I don't see where the issue would be, so I'm overall a little lost on your question

[safe lagoon]

i dont want to process the payment, i just want a calculated total for given products and quantities

so we have our own checkout page, where you can select an amount for some predefined products and we want a "total price preview"

[tall summit]

hmm. Can't you just do the multiplication in your code easily? Ultimately the 'shopping cart' is not part of Stripe, it's part of your own e-commerce software

otherwise, you can pass lines to https://docs.stripe.com/api/invoices/upcoming to get a preview Invoice. But to me this is all just logic I'd build in my own site really

[safe lagoon]

well that endpoint doesnt accept recurring prices.. so its not applicable for us

but i will discuss that with my team again, I also think its best to just calculate it by ourself

[tall summit]

really it doesn't? I'm fairly certain it does, it's for previewing subscriptions

but yeah I mean I don't understand why you don't just do the multiplication

[tall summit]

you say you already have "[your] our own checkout page, where you can select an amount for some predefined products" so the total is just sum(each price * each quantity)

[safe lagoon]

because we want to be 100% sure that the displayed amount is also the amount that is being charged

[tall summit]

request ID req_xxx ?

[safe lagoon]

req_kj4aRce8urIz2t

[tall summit]

then pass the item to a CheckoutSession and redirect to that and it will show a preview and accept the payment

[safe lagoon]

but its a requirement by our stakeholders to display the total amount in our own page...

[tall summit]

you'd use subscription_items instead of invoice_items.

[safe lagoon]

i'll look into it

but looks like it could be what we need

[safe lagoon]

it appears that I cannot input a price that is already existing in that subscription. I need to update the amount of a given price in that subscription and need the total amount before to display it in our checkout.
Request ID: req_4iJyGuvT5HuMR0

[little owl]

I need to update the amount of a given price
What do you mean by 'update the amount'? The unit amount or the quantity?

[safe lagoon]

the quantity, sorry

[little owl]

OK, so the payload of this request (https://dashboard.stripe.com/test/logs/req_4iJyGuvT5HuMR0) is attempting to add a new item. You need to include the id parameter in your payload that maps to the si_xxx ID you want to update the quantity of: https://docs.stripe.com/api/invoices/upcoming#upcoming_invoice-subscription_items-id