Cashier-stripe: Add ability to add coupon in swap

[ssrahman]

Currently it is not possible to add coupon while changing a plan using swap. We offer coupons to users and promote migrating to yearly plans.

[driesvints]

Yeah, this could be added perhaps.

[Dasinfomedia2]

Does stripe support it the same? add coupon code with plan upgrade via API?

[driesvints]

@Dasinfomedia2 I'm not sure what you're asking. This is the repo for the Stripe integration.

[Dasinfomedia2]

Yes.
I also want to add coupon code while changing the plan. But it cannot be done with cashier.
I want to know does this feature stripe support? So, I can do it with stripe API coding.
I couldn't find on stripe API docs.

[driesvints]

I think so yes because there's a coupon field on the update method of a subscription: https://stripe.com/docs/api/subscriptions/update

[Dasinfomedia2]

Ok.
Thanks for the link.
I hope this functionality will be added in cashier ASAP.

[driesvints]

This will be added in the next major version.