not done

app/models/seed_generator.rb

@@ -9,16 +9,26 @@ class SeedGenerator < ApplicationRecord
       seed.model = model
       new_receipt_no = seed.next
       seed.save
+    else 
+      next_current = self.update_seed(model, seed.next, seed.increase_by) 
+      puts "OOO"
+      puts seed.next
 
-    else
-      current_no = seed.next
-      seed.next = seed.next + seed.increase_by
-      seed.current = current_no
-      seed.save
+      if seed.next == next_current
+        next_current = next_current + 1
+      end
+
+      puts "MMM"
+      puts next_current
+      currentNo = next_current
+      
+      # current_no = seed.next
+      # seed.next = seed.next + seed.increase_by
+      # seed.current = current_no
+      # seed.save   
     end
-
     padding_len = 15 - prefix.length
-    saleOrderId = prefix +"-"+ seed.current.to_s.to_s.rjust((14-prefix.length)+1,'0')
+    saleOrderId = prefix +"-"+ currentNo.to_s.to_s.rjust((14-prefix.length)+1,'0')
     return saleOrderId
 
   end
@@ -71,4 +81,36 @@ class SeedGenerator < ApplicationRecord
     next_code = prefix + seed.current.to_s.to_s.rjust((count)+1,'0')    
     return next_code
   end
+
+  private
+
+  # for duplicate key - with execute query
+  def self.get_seed(model)
+    seed_val = []
+    select_sql = "select * from seed_generators  where model='#{model}';"
+    select_result = ActiveRecord::Base.connection.execute(select_sql);
+    select_result.each do |row|      
+      p row
+      seed_val = row
+    end
+
+    return seed_val
+  end
+
+  def self.update_seed(model, current, inc)
+    next_val = 0
+    nex = current + inc
+    update_sql = "update seed_generators set current= #{current}, next= #{nex} where model='#{model}';";
+    select_sql = "select * from seed_generators  where model='#{model}';"
+    update_result = ActiveRecord::Base.connection.execute(update_sql);
+    Rails.logger.debug "SeedGenerator -> " + update_result.to_s
+
+    select_result = ActiveRecord::Base.connection.execute(select_sql);
+    select_result.each do |row|      
+      p row[3]
+      next_val = row[3]
+    end
+
+    return next_val
+  end
 end