ruby-on-rails – 使用Devise和Paypal进行用户注册

registration_controller.rb

module Auth
  class RegistrationController < Devise::RegistrationsController
    include Auth::RegistrationHelper

    def create
      @user = User.new params[:user]
      if @user.valid?
        redirect_to get_subscribe_url(@user,request)
      else
        super
      end
    end
  end
end

registration_helper.rb

module Auth::RegistrationHelper
  def get_subscribe_url(user,request)
    url = Rails.env == "production" ? "https://www.paypal.com/cgi-bin/webscr/?" : "https://www.sandbox.paypal.com/cgi-bin/webscr/?"
    url + {
        :ip => request.remote_ip,:cmd => '_s-xclick',:hosted_button_id => (Rails.env == "production" ? "ID_FOR_BUTTON" : "ID_FOR_BUTTON"),:return_url => root_url,:cancel_return_url => root_url,:notify_url => payment_notifications_create_url,:allow_note => true,:custom => Base64.encode64("#{user.email}|#{user.organization_type_id}|#{user.password}")
    }.to_query
  end
end

payment_notification_controller.rb

class PaymentNotificationsController < ApplicationController
  protect_from_forgery :except => [:create]
  layout "single_column",:only => :show

  def create
    @notification = PaymentNotification.new
    @notification.transaction_id = params[:ipn_track_id]
    @notification.params = params
    @notification.status = "paid"
    @custom = Base64.decode64(params[:custom])
    @custom = @custom.split("|")
    @user = User.new
    @user.email = @custom[0]
    @user.organization_type_id = @custom[1].to_i
    @user.password = @custom[2]
    if @user.valid?
      @user.save
      @notification.user = @user
      @notification.save
      @user.send_confirmation_instructions
    end
    render :nothing => true
  end

  def show
  end
end