Discount added in Rebate

app/models/sale_item.rb

@@ -40,6 +40,8 @@ class SaleItem < ApplicationRecord
       food_prices = food_prices + food_price
       beverage_prices = beverage_prices + beverage_price
     end
+    puts food_prices
+    puts beverage_prices
     return food_prices, beverage_prices
   end
 
@@ -59,6 +61,17 @@ class SaleItem < ApplicationRecord
     return food_price, beverage_price
   end
 
+  def self.get_overall_discount(sale_id)
+    price = 0.0
+    item=SaleItem.where("product_code=?", sale_id)
+
+    item.each do|i|
+      price += i.price
+    end
+
+    return price
+  end
+
   private
   def generate_custom_id
     self.sale_item_id = SeedGenerator.generate_id(self.class.name, "SLI")