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method

migrate

Importance_0
Ruby on Rails latest stable (v4.0.2) - 0 notes - Class: ActiveRecord::Migrator
migrate(migrations_paths, target_version = nil, &block) public

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# File activerecord/lib/active_record/migration.rb, line 739
      def migrate(migrations_paths, target_version = nil, &block)
        case
        when target_version.nil?
          up(migrations_paths, target_version, &block)
        when current_version == 0 && target_version == 0
          []
        when current_version > target_version
          down(migrations_paths, target_version, &block)
        else
          up(migrations_paths, target_version, &block)
        end
      end
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