represent Rails configuration as YAML

rails_dump_config.rb

def dump_config(object = Rails.application.config.class.class_variable_get(:@@options)) 
  case object
  when Array
    object.map { |v| dump_config(v) }
  when Hash
    Hash[ object.map { |key, value| [key, dump_config(value)] } ]
  when TrueClass, FalseClass, Numeric
    object
  else
    object.to_s
  end
end