educoder/app/models/application_record.rb

class ApplicationRecord < ActiveRecord::Base
  include NumberDisplayHelper

  attr_accessor :_extra_data

  self.abstract_class = true

  def format_time(time)
    time.present? ? time.strftime('%Y-%m-%d %H:%M') : ''
  end

  def display_extra_data(key)
    _extra_data&.[](key)
  end
end