module Playbook::Spacing

def spacing_props
  selected_props = spacing_options.keys.select { |sk| try(sk) }
  return nil unless selected_props.present?
  selected_props.map do |k|
    spacing_value = send(k)
    "#{spacing_options[k]}_#{spacing_value}" if spacing_values.include? spacing_value
  end.compact.join(" ")
end