class UserPreference < ActiveRecord::Base
  belongs_to :user
  serialize :others
  
  attr_protected :others
  
  def initialize(attributes = nil)
    super
    self.others ||= {}
  end
  
  def before_save
    self.others ||= {}
  end
  
  def [](attr_name)
    if attribute_present? attr_name
      super
    else
      others ? others[attr_name] : nil
    end
  end
  
  def []=(attr_name, value)
    if attribute_present? attr_name
      super
    else
      h = read_attribute(:others).dup || {}
      h.update(attr_name => value)
      write_attribute(:others, h)
      value
    end
  end
  
  def comments_sorting; self[:comments_sorting] end
  def comments_sorting=(order); self[:comments_sorting]=order end
  
  def warn_on_leaving_unsaved; self[:warn_on_leaving_unsaved] || '1'; end
  def warn_on_leaving_unsaved=(value); self[:warn_on_leaving_unsaved]=value; end
end