activity.rb

class Activity < ActiveRecord::Base
  belongs_to :user
  belongs_to :target, :polymorphic => true
  
  default_scope :order => 'activities.created_at DESC', :limit => 10
  
  AUDITION_POSTED           = 1 #target --> model audition
  AUDITION_FEEDBACK_UPDATED = 2 #target --> model audition
  AUDITION_VIEWED           = 3 #target --> model video
  NEW_PART                  = 4 #target --> model part
  
  def self.add(user, activity_type, target)
    return false if user.blank? or activity_type.blank? or target.blank?
    activity = Activity.new(:user => user, :activity_type => activity_type, :target => target)
    activity.save!
  end
end