Un-canceling a Stripe subscription - stripe-payments

Question

Suppose a user wants to cancel their subscription, so I issue a command like this:
stripe_subscription.delete(at_period_end: true)
Later, though—before the period ends—the user changes their mind. Is there a call I can issue to undo the scheduled cancellation?
If not, what's the best way to implement this? My best guess looks like this:
new_subscription = stripe_customer.subscriptions.create(plan: stripe_subscription.plan.id, trial_end: stripe_subscription.current_period_end)
stripe_subscription.delete() # if permitted
self.stripe_subscription = new_subscription
save!
Is there something better I can do?

Answer 1

If the subscription is still active, you just have to update the current subscription and pass the plan id once again and it would resume the subscription.
In PHP you would do:
$customer = Stripe_Customer::retrieve("cus_XXX");
$subscription = $customer->subscriptions->retrieve("sub_YYY");
$subscription->plan = "myPlanId";
$subscription->save();
This is covered in one of Stripe's support article in more details here.

Answer 2

Not sure if the accepted answer is an old one, but for the latest version of Stripe you have to do this (in PHP):
$sub->cancel_at_period_end = false;
return $sub->save();

Answer 3

From the dashboard. Go to your Subscription details and click Edit Details top corner right. A modal untitled "Reactivate subscription" should pop saying
This subscription is set to cancel at the end of the period. You can
reactivate the subscription and it'll continue as usual.
Click Reactivate
EDIT
It seems that the actions now appear on mouse over the remaining days before cancellation:
Note that it wont show if the subscription is already canceled.

Answer 4

As per the above answer from Supersan, this solution also works for C# using the latest Stripe.net library 21.4.1
var items = new [] { new SubscriptionItemUpdateOption() { Id = i.Id, PlanId = i.Plan.Id } }.ToList();
var updateOptions = new SubscriptionUpdateOptions { Items = updatedItems, CancelAtPeriodEnd = false };
await subscriptionService.UpdateAsync(externalSubscriptionId, updateOptions);
Where I've just set the Id and Plan Id to whatever they were before. Not sure if these are necessary if you aren't using multiple plan subscriptions.