module ActiveAdmin::ViewHelpers::DisplayHelper

def pretty_format(object)
  case object
  when String, Numeric, Symbol, Arbre::Element
    object.to_s
  when Date, Time
    I18n.localize object, format: active_admin_application.localize_format
  when Array
    format_collection(object)
  else
    if defined?(::ActiveRecord) && object.is_a?(ActiveRecord::Base) ||
       defined?(::Mongoid) && object.class.include?(Mongoid::Document)
      auto_link object
    elsif defined?(::ActiveRecord) && object.is_a?(ActiveRecord::Relation)
      format_collection(object)
    else
      display_name object
    end
  end
end