module ActiveAdmin::ViewHelpers::DisplayHelper

def pretty_format(object)

Attempts to create a human-readable string for any object
def pretty_format(object)
  case object
  when String, Numeric, Arbre::Element
    object.to_s
  when Date, Time
    localize object, format: :long
  else
    if defined?(::ActiveRecord) && object.is_a?(ActiveRecord::Base) ||
       defined?(::Mongoid)      && object.class.include?(Mongoid::Document)
      auto_link object
    else
      display_name object
    end
  end
end