method

pk_and_sequence_for

v2.2.1 - Show latest stable - Class: ActiveRecord::ConnectionAdapters::MysqlAdapter

pk_and_sequence_for(table)

public

Returns a table's primary key and belonging sequence.

# File activerecord/lib/active_record/connection_adapters/mysql_adapter.rb, line 521
      def pk_and_sequence_for(table) #:nodoc:
        keys = []
        execute("describe #{quote_table_name(table)}").each_hash do |h|
          keys << h["Field"]if h["Key"] == "PRI"
        end
        keys.length == 1 ? [keys.first, nil] : nil
      end

pk_and_sequence_for

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