require 'rails/generators'
require 'rails/generators/active_record'
require 'rails/generators/active_record/migration/migration_generator'

module SecondBase
  class MigrationGenerator < ActiveRecord::Generators::MigrationGenerator

    source_root ActiveRecord::Generators::MigrationGenerator.source_root

    def self.desc
      require 'rails/generators/rails/migration/migration_generator'
      Rails::Generators::MigrationGenerator.desc
    end

    include(Module.new{

      def migration_template(*args)
        path = Pathname
               .new(Rails.application.config.paths['db/migrate'].first)
               .relative_path_from(Rails.root)
               .to_s

        args[1].sub! path, "#{Railtie.config_path}/migrate" if args[1]
        super(*args)
      end

    })

  end
end

require 'rails/generators'
require 'rails/generators/active_record'
require 'rails/generators/active_record/migration/migration_generator'

module SecondBase
  class MigrationGenerator < ActiveRecord::Generators::MigrationGenerator

    source_root ActiveRecord::Generators::MigrationGenerator.source_root

    def self.desc
      require 'rails/generators/rails/migration/migration_generator'
      Rails::Generators::MigrationGenerator.desc
    end

    include(Module.new{

      def migration_template(*args)
        path = Pathname
               .new(Rails.application.config.paths['db/migrate'].first)
               .relative_path_from(Rails.root)
               .to_s
        args[1].sub! path, "#{Railtie.config_path}/migrate" if args[1]
        super(*args)
      end

    })

  end
end

Remove paragraph spacing in method.
Remove paragraph spacing in method.