Unorganized code

news.rb

class News < ActiveRecord::Base
  acts_as_commentable

  cattr_reader :per_page
  @@per_page = 7

  belongs_to :user
  has_many :posts, :as => :posting, :dependent => :destroy
  has_attached_file :image, 
                    :styles => { 
                      :large => "400x400>",
                      :large_headline => "400x225#",
                      :medium_headline => "250x195#",
                      :thumb => "50x50#"
                    },
                    :storage => :s3,
                        :s3_credentials => "#{RAILS_ROOT}/config/s3.yml",
                        :path => ":attachment/:id/:style.:extension"

  default_scope order("created_at desc") 
  scope :with_images, where("image_file_name IS NOT NULL")

  has_many :_endorsements, :as => :item, :class_name => 'Endorsement'


  def body_html
    RedCloth.new(self.body).to_html.gsub(/<\/?del>/,' - ')
  end

  def followers
    self.user.followers
  end


  def commenters
    self.comments.map {|comment| comment.user }.uniq   #=> ["a!", "b!", "c!", "d!"]
  end

  # emits_pfeeds :on => [:create] , :for => [ :participant_only ] # also available – :itself, :all_in_its_class
  # receives_pfeed

  validates_presence_of :title, :body, :summary
  validates_length_of :summary, :maximum => 200
end