Tag Archives: Paypal_adaptive

How to Block PayPal eCheque Payments

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Hey everyone,

Just a quick post on how to block eCheque payments. These are payments that take up to seven days to process and be approved. The site I am currently working on is in no position to reserve services for such a long period of time, so the request has been made to block non-instant payment methods.

In the sandbox environment, you just need to do the following:

  • Login to your applications PayPal account at sandbox.paypal.com
  • Press the My Account tab
  • Select profile (just underneath my account)
  • Under selling preferences, click Payment Receiving Preferences
  • Under Block the following payments, check ‘Payments by eCheque on your website. Note: You may not block echeque payments on eBay’

The credit card statement name can also be set here. Let me know if you have any trouble.

Cheers,
Chris

Paypal_Adaptive IPN Verification: INVALID – Ruby on Rails

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Hey everyone,

I’ve been working with the PayPal_Adaptive gem recently and unfortunately I’ve run into a few issues. The latest of these has been that that my IPN verification was returning an INVALID response from Paypal.

I had made a few modifications to the provided payment_notification.rb file in order to accommodate for a few app specific requirements. This left me having to pass the original data attribute params. Unfortunately this wasn’t identical to the response that PayPal expected, I actually needed to use the following:


#Incorrect usage
verify_ipn(params)

#Correct usage
verify_ipn(request.raw_post)

I realised this error after reading Tanel’s post about securing your IPN interactions so make sure you check out his blog if you run into any more problems!

Thanks,
Chris

OpenSSL::PKey::RSAError Neither PUB key nor PRIV key:: nested asn1 error – Adaptive Payments Gem

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Hey everyone,

I’ve been mucking around with PayPal for a while and decided to try out the adaptive_payments gem by Tommy Chheng. Unfortunately I ran into the following error:

OpenSSL::PKey::RSAError

Neither PUB key nor PRIV key:: nested asn1 error

It turns out that I’d simply skipped an important part of the readme file. The api_cert_file in the paypal_adaptive.yaml file should point to a file containing BOTH your paypal_cert_pem.txt and whatever your private key happens to be. This took an embarrassingly long time for me to figure out, so hopefully this will help some of you!

UPDATE
It turns out I still had this wrong, I was using the wrong certs. After sorting out a few more errors that I ran into after the one mentioned above I finally started getting a response from Paypal, unfortunately it was another error message:

Authentication failed. API credentials are incorrect

It turns out I was using the wrong certs. If you’ve run into the same problem you’ll need to go to Profile > Request API Credentials > Option 2 (Request API credentials to create your own API username and password.). Then download the cert and point to this.

UPDATE
Hey everyone, just another update to this. If you happened to be following the railscast on PayPal before attempting to use the gem, you may not get the option to download the certs mentioned above. To get around this, simply remove your existing certificates (Profile > API Access > Option 2 > Remove > Remove). You should now see the ‘Request API Certificate Option’.

Sorry about the confusing post, but there’s a *slight* chance it might be able to help someone else who runs into the same problem.
Cheers