method

reset_pk_sequence!

v1.0.0 - Show latest stable - 0 notes - Class: ActiveRecord::ConnectionAdapters::PostgreSQLAdapter

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Icon_private_sm = private
Icon_protected_sm = protected

reset_pk_sequence!(table, pk = nil, sequence = nil) public

Resets sequence to the max value of the table’s pk if present.

Show source

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 234
      def reset_pk_sequence!(table, pk = nil, sequence = nil)
        unless pk and sequence
          default_pk, default_sequence = pk_and_sequence_for(table)
          pk ||= default_pk
          sequence ||= default_sequence
        end
        if pk
          if sequence
            select_value "SELECT setval('\#{sequence}', (SELECT COALESCE(MAX(\#{pk})+(SELECT increment_by FROM \#{sequence}), (SELECT min_value FROM \#{sequence})) FROM \#{table}), false)\n", 'Reset sequence'
          else
            @logger.warn "#{table} has primary key #{pk} with no default sequence" if @logger
          end
        end
      end