#content_for with custom parameters

parameterized_content_for_helper.rb

module ParameterizedContentForHelper
  # Warning! Content is being rewritten on each next call!
  def parameterized_content_for(name, *params, &block)
    @parameterized_content_for ||= {}
    if block_given?
      @parameterized_content_for[name] = block
    else
      block = @parameterized_content_for[name]
      capture *params, &block if block
    end
  end
end