Adding IPNs

app/models/ipn.rb

@@ -0,0 +1,50 @@
+class Ipn < ActiveRecord::Base
+  attr_accessible :data
+  belongs_to :payment
+
+  after_create :create_payment
+
+  def self.new_from_dynamic_params(params)
+    ipn = Ipn.new()
+
+    ipn.attributes.each do |c|
+      unless params[c.first.to_sym].nil?
+        ipn[c.first.to_sym] = params[c.first.to_sym]
+      end
+    end
+
+    return ipn
+  end
+
+  def link_payment
+    create_payment
+  end
+
+  private
+  def create_payment
+    # find user by email, then by payee
+    user = User.find_by_email(self.payer_email)
+    user = User.find_by_payee(self.payer_email) if user.nil? && self.payer_email.present?
+
+    # Only create payments if the amount matches a member level
+    if user.present?
+      if User.member_levels[self.payment_gross.to_i].present?
+        payment = Payment.new
+        payment.date = self.payment_date
+        payment.user_id = user.id
+        payment.amount = self.payment_gross
+        if payment.save
+          self.payment_id = payment.id
+          self.save!
+        else
+          return [false, "Unable to link payment. Payment error: #{payment.errors.full_messages.first}"]
+        end
+      else
+        return [false, "Unable to link payment. Couldn't find membership level '#{self.payment_gross.to_i}'."]
+      end
+    else
+      return [false, "Unable to link payment. Couldn't find user/payee '#{self.payer_email}'."]
+    end
+  end
+
+end

app/models/payment.rb

@@ -1,10 +1,12 @@
 class Payment < ActiveRecord::Base
   belongs_to :user
-  attr_accessible :date, :user_id, :created_by
+  has_one :ipn
+  attr_accessible :date, :user_id, :created_by, :amount
 
-  validates_presence_of :user_id, :date, :created_by
+  validates_presence_of :user_id, :date, :amount # not created_by
   validates_uniqueness_of :date, :scope => :user_id, :message => ' of payment already exists for this user.' 
 
+
   def human_date
     if date.year < DateTime.now.year
       date.strftime("%b %e, %y")

app/models/user.rb

@@ -85,6 +85,10 @@ class User < ActiveRecord::Base
     end
   end
 
+  def self.member_levels
+    {25 => "Associate", 50 => "Basic", 100 => "Plus"}
+  end
+
   def member_status
     case self.member_level.to_i
     when 0