_create_record

# File activerecord/lib/active_record/persistence.rb, line 579
    def _create_record(attribute_names = self.attribute_names)
      attribute_names &= self.class.column_names
      attributes_values = arel_attributes_with_values_for_create(attribute_names)

      new_id = self.class.unscoped.insert attributes_values
      self.id ||= new_id if self.class.primary_key

      @new_record = false

      yield(self) if block_given?

      id
    end