_create_record

# File activerecord/lib/active_record/persistence.rb, line 926
    def _create_record(attribute_names = self.attribute_names)
      attribute_names = attributes_for_create(attribute_names)

      new_id = self.class._insert_record(
        attributes_with_values(attribute_names)
      )

      self.id ||= new_id if @primary_key

      @new_record = false
      @previously_new_record = true

      yield(self) if block_given?

      id
    end