restore_transaction_record_state

# File activerecord/lib/active_record/transactions.rb, line 414
      def restore_transaction_record_state(force_restore_state = false)
        if restore_state = @_start_transaction_state
          if force_restore_state || restore_state[:level] <= 1
            @new_record = restore_state[:new_record]
            @previously_new_record = restore_state[:previously_new_record]
            @destroyed  = restore_state[:destroyed]
            @attributes = restore_state[:attributes].map do |attr|
              value = @attributes.fetch_value(attr.name)
              attr = attr.with_value_from_user(value) if attr.value != value
              attr
            end
            @mutations_from_database = nil
            @mutations_before_last_save = nil
            if self.class.composite_primary_key?
              if restore_state[:id] != @primary_key.map { |col| @attributes.fetch_value(col) }
                @primary_key.zip(restore_state[:id]).each do |col, val|
                  @attributes.write_from_user(col, val)
                end
              end
            else
              if @attributes.fetch_value(@primary_key) != restore_state[:id]
                @attributes.write_from_user(@primary_key, restore_state[:id])
              end
            end
            freeze if restore_state[:frozen?]
          end
        end
      end