product commission transaction in commissioner

app/models/commission.rb

@@ -1,5 +1,16 @@
 class Commission < ApplicationRecord
+  self.primary_key = 'commission_id'
+
+  # primary key - need to be unique
+  before_create :generate_custom_id
+
   belongs_to :menu_item, foreign_key: 'product_code'
   has_many :commissioners
   has_many :product_commissions
+
+  private
+
+  def generate_custom_id
+    self.commission_id = SeedGenerator.generate_id(self.class.name, 'COM')
+  end
 end