rounding decimal to print_settings precision

app/models/sale_order.rb

@@ -6,8 +6,9 @@ class SaleOrder < ApplicationRecord
 
   belongs_to :sale
   belongs_to :order
+  has_many :order_items, foreign_key: "order_id", primary_key: "order_id"
 
-  def create_sale_order(sale_id, order_id) 
+  def create_sale_order(sale_id, order_id)
       # sale_order = SaleOrder.new
       self.sale_id = sale_id
       self.order_id = order_id
@@ -37,6 +38,6 @@ class SaleOrder < ApplicationRecord
     if self.sale_order_id.nil?
       self.sale_order_id = SeedGenerator.generate_id(self.class.name, 'SOI')
     end
-    
+
   end
 end