greg-barnett

# db/migrate/#{timestamp}_add_owner_to_delayed_jobs
class AddOwnerToDelayedJobs < ActiveRecord::Migration
  def self.up
    add_column(:delayed_jobs, :owner_type, :string)
    add_column(:delayed_jobs, :owner_id, :integer)
  end

  def self.down
    remove_column(:delayed_jobs, :owner_type)
    remove_column(:delayed_jobs, :owner_id)

henrik

module NullifyBlankAttributes

  def write_attribute(attr_name, value)
    new_value = value.presence
    super(attr_name, new_value)
  end
  
end

adriand

class Video < ActiveRecord::Base  
  validates_presence_of :title
	
  named_scope :finished, :conditions => { :encoded_state => "finished" }
  
  has_attached_file :video, 
    :url => ":class/:id/:style/:basename.:extension",
    :path => ":class/:id/:style/:basename.:extension",
    :storage => :s3
  validates_attachment_presence :video