config/initializers/stripe.rb :


Stripe.api_key = Rails.application.secrets.stripe_private_key
StripeEvent.signing_secret = Rails.application.secrets.stripe_webhook_secret

StripeEvent.configure do |config|
  config.subscribe "charge." do |event|
    Webhooks::Charge.new(event).call
  end
end

secrets.yml:

development:
stripe_private_key: 'sk_test_*********'
stripe_public_key: 'pk_test_**********'
stripe_webhook_secret: 'whsec_**********'

production:
stripe_private_key: 'sk_test_********'
stripe_public_key: 'pk_test_*********'
stripe_webhook_secret: 'whsec_*********'