picture.rb

class Picture < Asset

  # === List of columns ===
  #   id                : integer
  #   data_file_name    : string
  #   data_content_type : string
  #   data_file_size    : integer
  #   assetable_id      : integer
  #   assetable_type    : string
  #   type              : string
  #   locale            : integer
  #   user_id           : integer
  #   created_at        : datetime
  #   updated_at        : datetime
  # =======================



  has_attached_file :data,
  :s3_credentials => "#{Rails.root}/config/s3.yml", :bucket => "yourbucket",
  :storage => :s3,
  :path => "#{APP_NAME}/images/:id/:style_:basename.:extension",
  :styles => { :content => '575>', :thumb => '100x100' }

  validates_attachment_size :data, :less_than=>2.megabytes

  def url_content
    url(:content)
  end

  def url_thumb
    url(:thumb)
  end

  def to_json(options = {})
    options[:methods] ||= []
    options[:methods] << :url_content
    options[:methods] << :url_thumb
    super options
  end
end