opensoul.org - Paypal IPN in Rails with Active Merchant Comments

Comment on 'Paypal IPN in Rails with Active Merchant' by Spencer Alexander

2008-08-05T22:03:19Z

Question regarding security: On the notify action, where we format the POST we get from paypal using Paypal::Notification.new(request.raw_post), do we need to worry at all about security and the validity of the POST? In otherwords, does Paypal::Notification automatically communicate with Paypal one final time to ensure that the POST is legit?

Thanks again for the great tutorial!

Comment on 'Paypal IPN in Rails with Active Merchant' by Spencer Alexander

2008-08-05T19:28:46Z

Great article! I’ve had a tough time getting everything set up with paypal and active merchant (not much documentation), and it’s great to come across well written tutorials like this.

Keep up the good work!

Comment on 'Paypal IPN in Rails with Active Merchant' by Brian

2008-06-27T04:53:44Z

This looks great…last thing I’m wondering is how to process anything other than a successful order. Such as a subscription cancellation, etc. Are these in the notify.status variable?

Comment on 'Paypal IPN in Rails with Active Merchant' by Ramon Tayag

2008-05-30T10:56:07Z

This definitely clears things up further! Thank you. However, how is payment.rb supposed to be?

Comment on 'Paypal IPN in Rails with Active Merchant' by Noah

2008-05-03T21:31:48Z

Just a thought, but when PayPal has to convert currencies, they send back the status as pending, which causes the “If notify.complete?” to return false, so you may want to change it to something like this to perform different actions on different statuses.

if notify.acknowledge
      begin
        case notify.status
        when "Completed" 
          @order.paypal_status = notify.status
          @order.transaction_id = notify.transaction_id
        when "Pending" 
          @order.paypal_status = "Pending because: #{params[:pending_reason]}" 
          @order.transaction_id = notify.transaction_id
        else
          @order.paypal_status = notify.status
          logger.error("Failed to verify Paypal's notification, please investigate")
        end
      ensure
        @order.save
      end
    end

Comment on 'Paypal IPN in Rails with Active Merchant' by Roger Pack

2008-03-14T06:31:23Z

gem install money, maybe?

Comment on 'Paypal IPN in Rails with Active Merchant' by Joel

2008-02-14T18:53:42Z

Hi, this is cool, but I get:

NameError (undefined local variable or method `‘money’’ for main:Object): /app/controllers/payments_controller.rb:2

I have installed the money gem, do I need to do a require ‘money’ in the environment.rb file? I tried that and I get:

/Library/Ruby/Gems/1.8/gems/money-1.7.1/lib/support/cattr_accessor.rb:7:in `cattr_reader’: undefined method `id2name’ for {:instance_writer=>false}:Hash (NoMethodError) from /Library/Ruby/Gems/1.8/gems/money-1.7.1/lib/support/cattr_accessor.rb:5:in `each’ from /Library/Ruby/Gems/1.8/gems/money-1.7.1/lib/support/cattr_accessor.rb:5:in `cattr_reader’ from /Library/Ruby/Gems/1.8/gems/money-1.7.1/lib/support/cattr_accessor.rb:54:in `cattr_accessor’ from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activerecord-1.15.6/lib/active_record/base.rb:268

at server startup, any ideas?

Comment on 'Paypal IPN in Rails with Active Merchant' by Vishwa

2007-12-08T16:04:13Z

Phil, If you are still hitting this issue {NameError (uninitialized constant AccountController::Paypal): Where is this PayPal class? It doesn’t seem to be in active merchant.}

you might want to try ActiveMerchant::Billing::Integrations::Paypal.

Additionally ensure that you have done a require ‘active_merchant’ in your environment.rb

Comment on 'Paypal IPN in Rails with Active Merchant' by Matthias

2007-10-25T15:14:07Z

thanks brandon

that’s the part who content the price

def populate_order 
  for cart_item in @cart.cart_items 
    order_item = OrderItem.new( 
      :book_id => cart_item.book_id, 
      :price => cart_item.price - current_user.offre, 
      :amount => cart_item.amount,
  :form_choice => cart_item.form_choice,
  :time_choice => cart_item.time_choice,
  :expire_at => cart_item.expire_at    
    ) 
    @order.order_items << order_item 
  end 
end

I don’t really understand your solution…

Comment on 'Paypal IPN in Rails with Active Merchant' by Brandon

2007-10-23T21:07:52Z

Matthias,

The amount field is expecting a Money object, and if it doesn’t get one, it converts the integer, treating it as cents.

So you’ll want to pass in the number as cents. If the amount is being stored in a model, you might want to check out acts_as_money

Comment on 'Paypal IPN in Rails with Active Merchant' by Matthias

2007-10-23T09:35:04Z

Hi, i have just a little problem. When i process order and i look for the result in my paypal account i find my order, but the big problem is my total is divised by 100. Result i process an order with a total : 60 and the result in my paypal account is 0,60

Does someone can help me ??

Comment on 'Paypal IPN in Rails with Active Merchant' by Jordan Brough

2007-10-11T05:10:27Z

Thanks for the post, just what I was looking for. Would be nice if PayPal was just set up so easy that we didn’t need a tool like ActiveMerchant though…

Comment on 'Paypal IPN in Rails with Active Merchant' by Phil

2007-09-29T12:15:26Z

Looks good, but, why do I get this on the notify:

NameError (uninitialized constant AccountController::Paypal):

Where is this PayPal class? It doesn’t seem to be in active merchant.

Comment on 'Paypal IPN in Rails with Active Merchant' by Dinesh

2007-09-08T22:02:44Z

Very helpful Brandon, I could able to set up my test paypal account in less than 15 min. Thanks a lot.

Comment on 'Paypal IPN in Rails with Active Merchant' by Brandon

2007-09-05T13:14:01Z

Mike: Thanks, I’ve updated the url in the post.

Comment on 'Paypal IPN in Rails with Active Merchant' by Mike

2007-09-04T18:00:02Z

Thanks very much for such a helpful Active Merchant example.

The command you have listed for installing the AM plugin gives an access denied error, which I believe is because the repository has been moved. The new repository is at: http://activemerchant.googlecode.com/svn/trunk/active_merchant

Comment on 'Paypal IPN in Rails with Active Merchant' by Brandon

2007-08-10T02:00:09Z

Observer,

The problem is that due to the way Paypal’s website payments work, the user needs to post all that data to paypal. So no matter how you try to obfuscate it, you’re still dependent on the client to post all the details.

Comment on 'Paypal IPN in Rails with Active Merchant' by Observer

2007-08-09T22:24:14Z

This is a great example. Thanks for the informative blog post. I’m wondering if maybe you might want to hide a lot of the details in the view in a controller, as in, just post the enrollment and user id and populate and redirect the form. You can certainly encrypt a button through PayPal, but this might give you another way to hide details that someone can’t try and use to create a fake form post with an alteration.

Comment on 'Paypal IPN in Rails with Active Merchant' by Justin

2007-07-17T18:49:42Z

IPN Seems to be working for the most part, but the “If notify.complete?” part is never TRUE. What determines if that is true or not? Is there something I need to do for it to be true? Or is it completely in Paypal’s hands?

Comment on 'Paypal IPN in Rails with Active Merchant' by Justin

2007-07-16T14:36:22Z

If I have require ‘money’ in the environment.rb file I don’t need it in the controller right?

FYI: I was using “require ‘activemerchant’” in the environment.rb file which wasn’t working. I didn’t realize that I needed an underscore. Adding “require ‘active_merchant’” works just fine. Thanks Brandon.

Comment on 'Paypal IPN in Rails with Active Merchant' by inboulder

2007-07-15T20:31:50Z

note: to get anything out of the notify object you need to put require ‘money’ in the controller.

Comment on 'Paypal IPN in Rails with Active Merchant' by Justin

2007-07-12T22:22:34Z

I tried “require ‘activemerchant’” and got the error:

warning: already initialized constant OPTIONS

Comment on 'Paypal IPN in Rails with Active Merchant' by Justin

2007-07-12T22:19:34Z

Solved my problem after a LOT of looking.

I originally installed ActiveMerchant using “gem install”.

My problem went away only after I installed ActiveMerchant as a PLUGIN. This is different from a GEM.

Comment on 'Paypal IPN in Rails with Active Merchant' by Brandon

2007-07-12T21:49:26Z

Justin,

Do you have ActiveMerchant installed as a plugin or a gem? If you have the gem installed, then you also need to do require 'active_merchant' in your environment.rb file

Comment on 'Paypal IPN in Rails with Active Merchant' by Justin

2007-07-12T21:43:46Z

I keep getting “uninitialized constant ActiveMerchant (NameError)” when trying to start the server with “ActiveMerchant::Billing::Base.mode = :test” in the environment.rb file.

I have “require_gem ‘money’” in the environment.rb file.

Comment on 'Paypal IPN in Rails with Active Merchant' by Frank

2007-06-12T11:15:58Z

Wow, that looks great… I’m going to try it for my current project. Thank you

Comment on 'Paypal IPN in Rails with Active Merchant' by Haig Didizian

2006-12-08T16:01:28Z

Thanks for this, Brandon. You saved me a good bit of time. I just wanted to add that I needed to put “require_gem ‘money’” into my environment.rb file to avoid a NameError exception during the notification phase.