使用active_paypal_adaptive_payment gem授权preapproved_pa​​yment_key

Question

Man, I'm tearing my hair out over this one. Paypal's documentation is so complicated and incomplete, and there is little native ruby support for Adaptive Payments.

Anyway, I'm building a web app from which I want to be able to set up preapproved payments using PayPal Adaptive Payments. I've gotten the active_paypal_adaptive_payment gem to work, but there's no documentation on the process for going from preapproval to capturing payments.

I can use the preapprove_payment method of the gem to get a preapproval key from PayPal:

response = ADAPTIVE_GATEWAY.preapprove_payment ({
  :return_url => admin_preapproved_payments_url,
  :cancel_url => admin_preapproved_payments_url,
  :senderEmail => @payment.sender_email,
  :start_date => @payment.start_date,
  :end_date => @payment.end_date,
  :currency_code =>"USD",
  :max_amount => @payment.max_amount.to_s,
  :maxNumberOfPayments => @payment.max_number_of_payments.to_s
  })
  puts response.preapproval_key

But the sender needs to authorize the preapproval key before I can use it to capture funds from their account.

Where do I redirect the sender so they can authorize the preapproval key? I don't want to capture funds immediately – I just need their approval so I can do so in the future.

Answer 1

The method redirect_pre_approval_url_for(token) is what you need, it returns a URL to which you should (well, obviously) redirect the user in order to authorize the preapproved payment.

redirect_pre_approval_url_for(token)

So, in a rails application things should look like this:

redirect_to ADAPTIVE_GATEWAY.redirect_pre_approval_url_for(response.preapproval_key)

Answer 2

我建议与Paypal 一起试用ActiveMerchant