gistfile1.txt

class Resource < ActiveRecord::Base
    
  include PaperclipSupport  
  
  if CONFIG['s3']
    has_attached_file :attachment, :storage => :s3, :path => "files/:filename",
                      :bucket => CONFIG['s3_bucket_name'], # TODO is there a way to share this between models?
                      :s3_credentials => {  :access_key_id => CONFIG['s3_access_id'], 
                                            :secret_access_key => CONFIG['s3_secret_key'] },
                      :s3_headers => { 'Cache-Control' => 'max-age=315576000', 'Expires' => 10.years.from_now.httpdate }
  else
    has_attached_file :attachment, :storage => :filesystem, :url => "/files/:filename"
  end
  
  validates_attachment_size :attachment, :less_than => 100.megabytes
  
  def is_mp3?
    %w(audio/mpeg audio/mpg).include?(attachment_content_type) ? true : false
  end
  
  before_post_process :image?
  def image?
    !(attachment_content_type =~ /^image.*/).nil?
  end
  	      
	
  acts_as_indexed :fields => [:title, :type_of_content]

 #def validate
#    errors.add_to_base("You must choose a file to upload") unless self.filename
#    
#    unless self.filename.nil?
#      [:size].each do |attr_name|
#        enum = attachment_options[attr_name]
#        unless enum.nil? || enum.include?(send(attr_name))
#          errors.add_to_base("Files should be smaller than 50 MB in size")
#        end
#      end
#    end
#    
#  end
  
  # used for searching
  def type_of_content
    #self.attachment_content_type.split("/").join(" ")
    "nonimage"
  end

	def title
	  self.attachment_file_name
		##(split_filename = self[:filename].split('.')).pop and return split_filename.join('.').titleize
	end
  
  private
  
  def attachment_url_provided?
    !self.attachment_url.blank?
  end
  
  def download_remote_file
    self.attachment = do_download_remote_file
    self.attachment_remote_url = attachment_url
  end
  
  def do_download_remote_file
    io = open(URI.parse(attachment_url))
    def io.original_filename; base_uri.path.split('/').last; end
    io.original_filename.blank? ? nil : io
  rescue # catch url errors with validations instead of exceptions (Errno::ENOENT, OpenURI::HTTPError, etc...)
  end
  
end