I have a PayPal setup using paypal return 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 configure IPN so that users cancel / suspend billing from their PayPal account, which will appear as canceled 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
Subscription 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 Notification 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
Notification Controller:
def create query = params query[:cmd] = "_notify-validate" if(response.body == "VERIFIED") Rails.logger.debug params.inspect "Notification is valid" end end end