Upgrading Stripe API support to 2017-08-15.

app/concerns/koudoku/subscription.rb

@@ -96,7 +96,7 @@ def processing!
 
             # store the customer id.
             self.stripe_id = customer.id
-            self.last_four = customer.cards.retrieve(customer.default_card).last4
+            self.last_four = customer.sources.retrieve(customer.default_source).last4
 
             finalize_new_subscription!
             finalize_upgrade!
@@ -123,11 +123,11 @@ def processing!
 
         # fetch the customer.
         customer = Stripe::Customer.retrieve(self.stripe_id)
-        customer.card = self.credit_card_token
+        customer.source = self.credit_card_token
         customer.save
 
         # update the last four based on this new card.
-        self.last_four = customer.cards.retrieve(customer.default_card).last4
+        self.last_four = customer.sources.retrieve(customer.default_source).last4
         finalize_card_update!
 
       end

lib/generators/koudoku/templates/config/initializers/koudoku.rb

@@ -2,17 +2,17 @@
   config.subscriptions_owned_by = :<%= subscription_owner_model %>
   config.stripe_publishable_key = ENV['STRIPE_PUBLISHABLE_KEY']
   config.stripe_secret_key = ENV['STRIPE_SECRET_KEY']
-  
-  Stripe.api_version = '2015-01-11' #Making sure the API version used is compatible.
+
+  Stripe.api_version = '2017-08-15' # Making sure the API version used is compatible.
   # config.prorate = false # Default is true, set to false to disable prorating subscriptions
   # config.free_trial_length = 30
 
   # Specify layout you want to use for the subscription pages, default is application
   config.layout = 'application'
-  
+
   # you can subscribe to additional webhooks here
-  # we use stripe_event under the hood and you can subscribe using the 
-  # stripe_event syntax on the config object: 
+  # we use stripe_event under the hood and you can subscribe using the
+  # stripe_event syntax on the config object:
   # config.subscribe 'charge.failed', Koudoku::ChargeFailed
-  
+
 end