initialize_dup

# File activerecord/lib/active_record/core.rb, line 243
    def initialize_dup(other) # :nodoc:
      cloned_attributes = other.clone_attributes(:read_attribute_before_type_cast)
      self.class.initialize_attributes(cloned_attributes, :serialized => false)

      @attributes = cloned_attributes
      @attributes[self.class.primary_key] = nil

      run_callbacks(:initialize) unless _initialize_callbacks.empty?

      @changed_attributes = {}
      init_changed_attributes

      @aggregation_cache = {}
      @association_cache = {}
      @attributes_cache  = {}

      @new_record  = true

      ensure_proper_type
      super
    end