Thanks Colin! You found the root of my problem, the invoice/id was wrong. And thanks for the tips regarding Ruby-debug. Still has a lot to learn. :D
// Anders On 7 Dec, 22:35, Colin Law <clan...@googlemail.com> wrote: > On 7 December 2010 21:03, Anders_P <and...@andersplanting.se> wrote: > > > > > > > Hello! > > > I'm trying to integrate PayPal into my (first) Rails app. I've been > > looking at RailsCast > > #142,http://railscasts.com/episodes/142-paypal-notifications. > > But I don't get it to work. My app isn't a normal e-commerce site, > > it's a buy and sell site. Every ad has a 'published' boolean, which I > > want to set to true if the user completes the payment process. My code > > looks like this. > > > Order model: > > > class Order < ActiveRecord::Base > > belongs_to :ad > > > def paypal_url(return_url, notify_url) > > values = { > > :business => 'anders_1291665108_...@my_mail.se', > > :cmd => '_xclick', > > :currency_code => "SEK", > > :upload => 1, > > :return => return_url, > > :invoice => id, > > :amount => 15, > > :item_name => "Ad", > > :quantity => 1, > > :lc => "SE", > > :notify_url => notify_url > > } > > "https://www.sandbox.paypal.com/cgi-bin/webscr?"; + > > values.to_query > > end > > end > > > My Payment Notifications Controller: > > > class PaymentNotificationsController < ApplicationController > > protect_from_forgery :except => [:create] > > > def create > > PaymentNotification.create!(:params => params, :ad_id => > > params[:invoice], :status => params[:payment_status], > > :transaction_id => params[:txn_id]) > > render :nothing => true > > end > > end > > > And my Payment Notification model (where I think the problem is): > > > class PaymentNotification < ActiveRecord::Base > > belongs_to :ad > > serialize :params > > after_create :mark_ad_as_purchased > > > def mark_ad_as_purchased > > if status == "Completed" > > ad.update_attribute(:published => true) > > Assuming this is where it is failing, you are updating the attribute > of ad, but the error says ad is nil. I assume this is supposed to be > setup from params[:invoice] above. I suggest you use ruby-debug to > break into your code here and see what is going on. If you do not > know about ruby-debug have a look at the Rails Guide on debugging. > Also you could look in the log to see the query creating the > notification record to check that ad_id is set correctly. > > Colin > > > > > end > > end > > end > > > I get an error that says: > > > NoMethodError in Payment notificationsController#create > > > You have a nil object when you didn't expect it! > > You might have expected an instance of ActiveRecord::Base. > > The error occurred while evaluating nil.update_attribute -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
