ActiveRecord .save return true but doesn't save ?

so i did create 'Archive' module .

module Archive def self.included(klass) klass.instance_eval do    define_method "save_#{klass.name}_archive" do      ArchiveLogs.debug("PASS HERE")      self.becomes "Arch#{klass.name}".constantize     end    end   end end

and i use it just here :

     ArchiveLogs.debug("DEV BEGIN")

     ArchiveLogs.debug("DEV inspect content"+content.inspect)      archived_content = content.save_Content_archive      ArchiveLogs.debug("DEV inspect archived"+archived_content.inspect)      test = archived_content.save      test2 = archived_content.save!

     ArchiveLogs.debug("DEV WORK ?"+test.inspect)      ArchiveLogs.debug("DEV WORK 2?"+test2.inspect)

and here are my logs

DEV BEGIN DEV inspect content#<Content id: 1653768, server_path: "20141219/M2014121900660", server_name: "content.html", is_html: 1, checksum: #<BigDecimal:62433c0,'0.1307989417E10',18(27)>, save_date: nil, save_place: nil, user_id: nil, created_at: "2015-03-31 11:29:43", updated_at: "2015-03-31 11:29:43", ts_content: nil> PASS HERE DEV inspect archived#<ArchContent id: 1653768, server_path: "20141219/M2014121900660", server_name: "content.html", is_html: 1, checksum: #<BigDecimal:624a9e0,'0.1307989417E10',18(27)>, save_date: nil, save_place: nil, user_id: nil, created_at: "2015-03-31 11:29:43", updated_at: "2015-03-31 11:29:43", ts_content: nil> DEV WORK ?true DEV WORK 2?true

content model :

class Content < ActiveRecord::Base    has_many :information    attr_accessor :text_content    include Archive   .   .   .#many methods here   .   . end

Arch content model :

class ArchContent < ActiveRecord::Base   set_table_name 'archive.contents'   has_many :information, :class_name => 'ArchInformation',foreign_key: 'content_id'   include Archive   .   .   .#many methods here   .   . end

as you see , my Archive module does his job. Creating ArchContent object when i give him Content object.

But here is my problem .save return true , but my archived_content isn't store in my database. Why ?

how to debug this ? Any help apricieted !