Creating IPN URL for PayPal - ruby-on-rails

Question

I have PayPal setup using the paypal recurring gem. I need help understanding how to implement PayPal IPN.
Any help would be greatly appreciated as this is the last step for my project. I need to have the IPN setup so that when users cancel/suspend billing from their PayPal account that it will show as cancelled from my database.
Paypal_payment.rb:
def initialize(subscription)
#subscription = subscription
end
def checkout_details
process :checkout_details
end
def checkout_url(options)
process(:checkout, options).checkout_url
end
def make_recurring
process :request_payment
process :create_recurring_profile, period: :monthly, frequency: 1, start_at: Time.zone.now
end
def suspend
process :suspend, :profile_id => #subscription.paypal_recurring_profile_token
end
def reactivate
process :reactivate, :profile_id => #subscription.paypal_recurring_profile_token
end
private
def process(action, options = {})
options = options.reverse_merge(
token: #subscription.paypal_payment_token,
payer_id: #subscription.paypal_customer_token,
description: #subscription.plan.name,
amount: #subscription.plan.price,
ipn_url: "http://mydomain.com/paypal/ipn",
currency: "USD"
)
response = PayPal::Recurring.new(options).send(action)
raise response.errors.inspect if response.errors.present?
response
end
end
Subscription.rb:
belongs_to :plan
belongs_to :subscription
belongs_to :user
validates_presence_of :plan_id
validates_presence_of :email
attr_accessor :stripe_card_token, :paypal_payment_token
def expires_at
self.updated_at + plan.duration.days
end
def save_with_payment
if valid?
if paypal_payment_token.present?
save_with_paypal_payment
else
save_with_stripe_payment
end
end
end
def paypal
PaypalPayment.new(self)
end
def save_with_paypal_payment
response = paypal.make_recurring
self.paypal_recurring_profile_token = response.profile_id
save!
end
def save_with_stripe_payment
customer = Stripe::Customer.create(description: email, plan: plan_id, card: stripe_card_token)
self.stripe_customer_token = customer.id
save!
rescue Stripe::InvalidRequestError => e
logger.error "Stripe error while creating customer: #{e.message}"
errors.add :base, "There was a problem with your credit card."
false
end
def payment_provided?
stripe_card_token.present? || paypal_payment_token.present?
end
def suspend_paypal
paypal.suspend
save
end
def reactivate_paypal
paypal.reactivate
save
end
def update_card(subscriber, card_info)
token = Stripe::Token.create(
card: {
number: card_info[:number],
exp_month: card_info[:exp_month],
exp_year: card_info[:exp_year],
cvc: card_info[:cvc]
}
)
customer = Stripe::Customer.retrieve(user.subscription.stripe_customer_token)
card = customer.cards.create(card: token.id)
card.save
customer.default_card = card.id
customer.save
rescue Stripe::InvalidRequestError => e
logger.error "Stripe error while updating card info: #{e.message}"
errors.add :base, "#{e.message}"
false
end
end
Subscriptions controller:
def new
plan = Plan.find(params[:plan_id])
#subscription = plan.subscriptions.build
if params[:PayerID]
#subscription.paypal_customer_token = params[:PayerID]
#subscription.paypal_payment_token = params[:token]
#subscription.email = #subscription.paypal.checkout_details.email
end
end
def create
#subscription = Subscription.new(params[:subscription])
if #subscription.save_with_payment
redirect_to #subscription, :notice => "Thank you for subscribing!"
else
render :new
end
end
def show
#subscription = Subscription.find(params[:id])
end
def paypal_checkout
plan = Plan.find(params[:plan_id])
subscription = plan.subscriptions.build
redirect_to subscription.paypal.checkout_url(
return_url: new_subscription_url(:plan_id => plan.id),
cancel_url: root_url
)
end
def updatesubscription
#user = current_user
#customer = Stripe::Customer.retrieve(#user.subscription.stripe_customer_token)
if #user.subscription.plan_id == 12
#customer.update_subscription(:plan => "1", :prorate => true)
current_user.subscription.update_attributes(:plan_id => 1)
flash.alert = 'Your subscription has been changed to monthly!'
redirect_to root_url
elsif #user.subscription.plan_id == 1
#customer.update_subscription(:plan => "12", :prorate => true)
current_user.subscription.update_attributes(:plan_id => 12)
current_user.save!
flash.alert = 'Your subscription has been changed to annually!'
redirect_to root_url
end
end
def cancelsubscription
#user = current_user
#customer = Stripe::Customer.retrieve(#user.subscription.stripe_customer_token)
#customer.cancel_subscription()
current_user.subscription.update_attributes(:cancelled => 1)
current_user.save!
flash.alert = 'Your subscription has been cancelled successfully!'
redirect_to root_url
end
def showcard
#user = current_user
Stripe::Customer.retrieve(#user.subscription.stripe_customer_token).cards.all()
end
def suspend
#user = current_user
#user.subscription.suspend_paypal
current_user.subscription.update_attributes(:cancelled => 1)
flash.alert = 'Billing has been suspended!'
redirect_to root_url
end
def reactivate
#user = current_user
#user.subscription.reactivate_paypal
current_user.subscription.update_attributes(:cancelled => nil)
flash.alert = 'Billing has been activated!'
redirect_to root_url
end
def edit_card
#user = current_user
end
def update_card
#user = current_user
card_info = {
name: params[:name],
number: params[:number],
exp_month: params[:date][:month],
exp_year: params[:date][:year],
cvc: params[:cvc]
}
if #user.subscription.update_card(#subscriber, card_info)
flash.alert = 'Saved. Your card information has been updated.'
redirect_to root_url
else
flash.alert = 'Stripe reported an error while updating your card. Please try again.'
redirect_to root_url
end
end
end
routes:
post "paypal/ipn" => "notifications#create"
Payment Notifications controller:
def index
redirect_to root_url
end
def create
PaymentNotification.create!(:params => params, :status => params[:payment_status], :transaction_id => params[:txn_id])
render :nothing => true
end
end
Notifications controller:
def create
query = params
query[:cmd] = "_notify-validate"
if(response.body == "VERIFIED")
Rails.logger.debug params.inspect "Notification is valid"
end
end
end

Answer 1

You need to fix your routes.
It should be:
match '/paypal/ipn' => 'notifications#create', :via => [:get, :post], :as => 'notifications_create'

Answer 2

In the PayPal developer site there is an IPN test tool. You can provide it your callback URL and send sample calls. You'll have to register first to use it.

Answer 3

So you're only problem is getting the IPN's to trigger in your test account..?? When you use the Simulator does everything work as expected?
To get IPN working in the sandbox all you need to do is make sure it's enabled in your sandbox seller account profile. You can login to your sandbox account at http://sandbox.paypal.com just like you would a live account. Once you're in there go into the profile and then into IPN settings so you can enable it and set the URL accordingly.