_delete_record

# File activerecord/lib/active_record/persistence.rb, line 200
      def _delete_record(constraints) # :nodoc:
        constraints = _substitute_values(constraints).map { |attr, bind| attr.eq(bind) }

        dm = Arel::DeleteManager.new
        dm.from(arel_table)
        dm.wheres = constraints

        connection.delete(dm, "#{self} Destroy")
      end