rails 4 - stripe_event functions

Question

I'm using the Stripe payment service, with the stripe and stripe_event gems. So far so good-- they work great.

I want to use the stripe_event webhooks listener to do a bunch of actions. For example, when Stripe sends a webhook advising the application of a new subscription, I want to add that subscription to the subscriptions table, send an email to the new user, advise admins, etc.

In the (very scant) stripe_event docs on github, they say to subscribe an object with the call method, and show the example as

class CustomerCreated
  def call(event)
    # Event handling
  end
end

However they don't show where this code lives (what file it would be placed in) or how it's invoked from config/initializers/stripe.rb.

Can someone provide a clear example of how to use these?

Answer 1

What I would do is make a new directory app/stripe_handlers and stick that code in a file named customer_created.rb. Any code in app/ gets automagically loaded by Rails. You could also stick it somewhere in lib/ but it wouldn't get autoloaded.

You would put your handler from your question in app/stripe_handlers/customer_created.rb, then in config/initializers/stripe_event.rb you would say something like:

StripeEvent.configure do |events| events.subscribe 'customer.created', CustomerCreated.new end

When StripeEvent gets an event with type customer.created it will call the call method on the instance of CustomerCreated that you made in the initializer.