a graceful degradation helper for dangerous operations in the template

graceful_degradation_helper.rb

module GracefulDegradationHelper

  # doctest:
  #
  #   >> gracefully { tag(:hello) }
  #   => "<hello />"
  #
  #   >> gracefully { raise "oops" }
  #   => ""
  #
  def gracefully(&block)
    begin
      capture &block
    rescue => e
      Rails.logger.warn e # better exception handling goes here
      ""
    end
  end
end