WIA/app/models/link.rb

class Link < ActiveRecord::Base
  attr_accessible :description, :release, :url
  validates :url,   :presence => true#, :url => true
  validates :description, :presence => true

  def self.released
    Link.where("DATE(release) <= DATE(?)", Time.now).order("release DESC")
  end

  def self.get_and_count(id = nil)
    return false if nil

    link = nil
    Link.transaction do
      link = Link.find(id)
      #need to rate limit visits increment
      link.increment!(:visits)
    end

    return false if link.release == nil

    return link
  end
end