使用activemerchant和ipn的Paypal Express结帐

Question

I'm stuck with getting activemerchants paypal express ipn notification to work.

My workflow looks like this:

# authorize the payment user gets redirected..
def auth
  ...
  gateway.setup_authorization(total_as_cents, setup_authorization_params)
  ...
end

# purchase the authorized sum
def purchase
  ...
  purchase_params = {
    token: @order.payment_params[:token],
    payer_id: @order.payment_params[:payer_id],
    currency: current_tenant.currency.unit,
    notify_url: paypal_ipn_callback_url
  }
  response = gateway.purchase(total_as_cents, purchase_params)
  ...
end

In the paypal docs it says notify_url is deprecated they use PAYMENTREQUEST_n_NOTIFYURL instead. But I have no clue how to tell this my paypal express gateway.

My ipn callback doesn't get called so I assume the notifyurl param doesn't work anymore. Paypal is in sandbox mode but that should make no difference right?

Any hints?

Answer 1

I believe that if you are using Paypal Express that means you are doing a deep integration with your system, and you don't need the IPN, you can get the response from

response = gateway.purchase(total_as_cents, purchase_params)

and get all information from it, and that response is an object

ActiveMerchant::Billing::PaypalExpressResponse

The IPN is used for the basic Paypal integration, with no API calls from your app, only Paypal URL redirect with params.