instance method migrate_status

# File activerecord/lib/active_record/tasks/database_tasks.rb, line 294
      def migrate_status
        unless migration_connection_pool.schema_migration.table_exists?
          Kernel.abort "Schema migrations table does not exist yet."
        end

        # output
        puts "\ndatabase: #{migration_connection_pool.db_config.database}\n\n"
        puts "#{'Status'.center(8)}  #{'Migration ID'.ljust(14)}  Migration Name"
        puts "-" * 50
        migration_connection_pool.migration_context.migrations_status.each do |status, version, name|
          puts "#{status.center(8)}  #{version.ljust(14)}  #{name}"
        end
        puts
      end