shift sale

app/models/sale.rb

@@ -345,8 +345,8 @@ class Sale < ApplicationRecord
            else
              ## up to 100
              value = 100 - get_last_no.to_f
-             num += value     
-             puts 'up to 100'      
+             num += value
+             puts 'up to 100'
            end
          end
       end
@@ -479,11 +479,12 @@ end
 
   def get_commerical_tax
     tax = 0.0
-     self.sale_taxes.each do |tax|
-        if tax.tax_name == "Commerical Tax"
-           tax += tax.tax_payable_amount
+     self.sale_taxes.each do |taxobj|
+        if taxobj.tax_name == "Commerical Tax"
+           tax += taxobj.tax_payable_amount
         end
      end
+     return tax
   end