defining class methods

gistfile1.rb

class SinglePages
  file :about, %w(text)
  
  class << self
    # Generate write method to this file
    def file(filename, attrs)
      define_method "write_#{filename}" do |properties_hash|
        puts properties_hash
      end
    end
  end
end

SinglePages.new.write_about('teste')

class SinglePages
  class << self
    def file(method_name, *args)
      class_eval <<-RUBY, __FILE__, __LINE__ + 1
        def write_#{method_name}(*args)
          args.each do |arg|
            puts arg
          end
        end
        RUBY
    end
  end

  file :about, %w(teste)
end