Cancelling on app purchase still installs the app

[mck782]

Hi experts, 

While developing a simple Shopify app, I'm struggling to set up billing logic. I followed the workshop tutorial to include billing logic into the authentication flow: https://workshops.shopify.dev/workshops/usage-billing#4

Everything works as expected except that when I click 'cancel' button in the payment page, it still installs the app. I also realized that session is getting stored in the designated DB before going through the payment. Is this expected or this is because I set isTest flag to true when calling request.billing? What would be the solution to this? Should I implement a middleware logic to re-direct all request to the payment page until the payment is made?

[jordanholmes]

Hello,

It is expected. The app has to be installed to call the billing api's.

You can just redirect traffic to a payment info page until the the merchant has accepted or uninstalls.

[snakecase · Accepted solution]

Hi,

I replied to someone with the same problem than you few days ago. My answer is here but I believe the whole thread can be interesting for you. I quote the interesting part of my first response below so you don't have to navigate around if you don't want to:

The workshop is about a "Usage Billing with the Shopify Billing API" which means that the subscription is here to limit the usage of a specific feature in your app, not to limit the access of the application.

---

Later in the thread, you can find a discussion on how to change the billingConfig and an advice on how to implement the access restriction (a middleware is probably the best solution)

I hope it helps you.