method
run
run()
public
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# File activerecord/lib/active_record/migration.rb, line 453 def run target = migrations.detect { |m| m.version == @target_version } raise UnknownMigrationVersionError.new(@target_version) if target.nil? unless (up? && migrated.include?(target.version.to_i)) || (down? && !migrated.include?(target.version.to_i)) target.migrate(@direction) record_version_state_after_migrating(target.version) end end