rounding decimal to print_settings precision

app/models/sale_item.rb

@@ -11,6 +11,7 @@ class SaleItem < ApplicationRecord
   def compute_item
   end
 
+  before_validation :round_to_precision
   after_update :update_stock_journal
 
   # Add Sale Items
@@ -231,6 +232,24 @@ class SaleItem < ApplicationRecord
     end
   end
 
+  def round_to_precision
+    unit_price_fraction = self.unit_price % 1
+    price_fraction = self.unit_price % 1
+    # is_dining_charge = self.menu_category_code == 'DingingCharge'
+
+    if self.unit_price != self.unit_price_was || self.price != self.price_was
+      if unit_price_fraction > 0 || price_fraction > 0
+        if ['Discount', 'promotion'].include?(self.status)
+          precision = PrintSetting.get_precision_delimiter().precision.to_i
+
+          self.unit_price = self.unit_price.round(precision)
+          self.price = (self.unit_price * self.qty).round(precision)
+          self.taxable_price = self.price
+        end
+      end
+    end
+  end
+
   def update_stock_journal
     is_void = self.status == "void" && self.status_before_last_save != "void"
     cancel_void = self.status_before_last_save == "void" && self.status.nil?