seed generator fun:

app/models/sale.rb

@@ -536,10 +536,13 @@ class Sale < ApplicationRecord
     shop = Shop.first
     
     #if tax is not apply create new record
-    SaleTax.where("sale_id='#{self.sale_id}'").find_each do |existing_tax|
-      #delete existing and create new
-      existing_tax.delete
-    end
+    # SaleTax.where("sale_id='#{self.sale_id}'").find_each do |existing_tax|
+    #   #delete existing and create new
+    #   existing_tax.delete
+    # end
+
+    taxes = SaleTax.where("sale_id='#{self.sale_id}'").pluck(:sale_tax_id)
+    SaleTax.where("sale_tax_id IN (?)", taxes).destroy_all
 
     total_tax_amount = 0
     tax_incl_exec = "exclusive"

app/models/seed_generator.rb

@@ -21,7 +21,6 @@ class SeedGenerator < ApplicationRecord
       seed.model = "sale"
       new_receipt_no = seed.next
       seed.save
-
     else
       current_no = seed.next
       seed.next = seed.next
@@ -85,7 +84,7 @@ class SeedGenerator < ApplicationRecord
     current = 0
     nex = 0
 
-    update_sql = "UPDATE seed_generators set current = current + 1, next = next + 1 WHERE model='#{model}';"
+    update_sql = "UPDATE seed_generators set current = next, next = next + 1 WHERE model='#{model}';"
     select_sql = "select * from seed_generators where model='#{model}';"
     update_result = ActiveRecord::Base.connection.execute(update_sql);