You need to "clone" an Active Record object. Which one of the examples do you prefer (or comment with your own!) and why?

cloning.rb

module Cloning
  def clone_record(column: :name)
    self.class.create(column => cloned_column_attribute(column))
  end

  private

  def cloned_column_attribute(column)
    1.upto(Float::INFINITY) do |clone_number|
      column_attribute = public_send(column)
      proposed_column_attribute = "#{column_attribute} (Clone #{clone_number})"
      return proposed_column_attribute unless self.class.exist?(column => proposed_column_attribute)
    end
  end
end

class Topic < ActiveRecord::Base
  include Cloning
end

topic = Topic.first
topic.clone_record
topic.clone_record(column: :title)

record_cloning.rb

class RecordCloning
  def initialize(record, column: :name)
    @record = record
    @column = column
  end

  def clone_record
    @record.class.create(@column => cloned_column_attribute)
  end

  private

  def cloned_column_attribute
    1.upto(Float::INFINITY) do |clone_number|
      return proposed_column_attribute(clone_number) unless taken?(clone_number)
    end
  end

  def taken?(clone_number)
    @record.class.exist?(@column => proposed_column_attribute(clone_number))
  end

  def proposed_column_attribute(clone_number)
    "#{column_attribute} (Clone #{clone_number})"
  end

  def column_attribute
    @column_attribute ||= @record.public_send(@column)
  end
end

topic = Topic.first
RecordCloning.new(topic).clone_record
RecordCloning.new(topic, column: :title).clone_record