#aki_checkout-invoice-creation

1 messages · Page 1 of 1 (latest)

cinder jayBOT
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solar ravine
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also what is needed to know : im using the invoiceid inside my checkpromotion method to retrieve the invoice object and check for an used promotion code.

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the problem is. after my redirect (session is paid and invoices will be created automatically), the session.InvoiceId is null

wraith gull
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hi there!

solar ravine
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and even more confusing is : SOMETIMES its not null .

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hey soma how u doing

wraith gull
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can you share a Checkout Session ID (cs_xxx) with this issue and without this issue?

solar ravine
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im trying let me reproduce the issue. mom*

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funny part is also : when i check sessions via postman . its never nul

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im also working in a .NET enviroment btw

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cs_test_b1GSPWQy1uVeNPSCacRUJDq3zsrOmyDp7A7BgF8zp5cJ7v5ExcGUu29mK0

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i have a breakpoint at : var promotionCode = await CheckPromotionCode(session.InvoiceId

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session.invoiceId is null right now

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if i retrive this id with postman i get on the invoice field : "invoice": "in_1PFxZ9F8xGnOlFmmYV0jD738"

wraith gull
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when do you retrieve the Checkout Session exactly? when listening to the checkout.session.completed event?

solar ravine
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idk whats happening in my backend (.NET) .. this is my code to get the session object; var session = await sessionService.GetAsync(sessionId);

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i have an api call that grabs the parameter to get the session object.

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var session = await sessionService.GetAsync(sessionId);

wraith gull
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it's possible the Invoice ID gets added async, so maybe a few seconds later. if you try to fetch the Checkout Session ID now, I4m guessing there will be an invoice ID?

solar ravine
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its true a bit later i can retrieve the invoice data

wraith gull
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yes it's not ideal but it should work

solar ravine
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but its still not "working" in terms of tracking used promotion codes. i can retrieve afterwards some invoice data. but what i want is to check if any promotion code was used ( after payment ). even 5 second delay wont do any changes

wraith gull
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you want to know if users entered a promotion code in the Checkout Session?

solar ravine
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yes . but right now it is working ( i guess ). i have set the delay now to 5 secs before i do the api call to check the payment. and both use cases ( paying the checkout session with promo code and without promo code ) are working.

sage star
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Hi there 👋 jumping in as my teammate needs to step away soon. Is there information that you need to get from the Invoice object specifically, or is it something that can also be gotten from the Checkout Session object itself?

cinder jayBOT
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aki_checkout-invoice-creation

solar ravine
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so what we want is to give the opportunity to use promotion codes in the users checkout session. on our side of the app we are saving some of the transaction details. we do also want to save the promotion code that was used in a transaction ( we are using a sql database )

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the only way i found out , that shows if a promotion code was uses, is by checking the invoice object of a session

sage star
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Gotcha, do you just need to save it to your database (in which case I'd recommend using a webhook endpoint instead of a success url) or do you also need to immediately display those details back to the customer on your success page?

solar ravine
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i know webhook would be fine deal but rn we dont have it implemented. looking for a solution without using them. we just want to keep track of the used promotion code. for my use-case "one-time payments" its acutally working.

sage star
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I'd suggest them because they're a better solution. Using a success url approach relies on your customers making it to that success page and it loading. If they lose connection unexpectedly, or close their browser quickly, your downstream processes may never trigger after accepting their payment. That risk is avoided with webhook endpoints.