Rails - Sep 2005 - Model variables..

Hi, 

I''m trying to create a file upload thingie. I''ll show you the
code first:

Controller

      params[:photos].each do |k, v|  
        @photo = Photo.new do |p|
          v.rewind
          p.user_id = session[:user].id
          p.file = v.read
          logger.debug "filename = #{v.original_filename}"
          logger.debug "title = = #{p.title}"
          p.original_filename = v.original_filename
          p.content_type = v.content_type
          p.size = v.size
        end
        
       logger.debug "photo original name =
#{@photo.original_filename}"
       logger.debug "photo ext = #{@photo.extension}"
       logger.debug "photo title = #{@photo.title}"

        if @photo.save
          @valid << @photo
        else 
          @invalid = true
        end
        ... etc

Model

 ...
  attr_accessor :file, :content_type, :size, :extension
  attr_reader :original_filename

  def original_filename=(filename)
    @original_filename = filename
    self.title = filename ##do later
    ext_array = filename.split(''.'')
    @extension = ext_array.pop
  end

  def validate_on_create
    if @size <= 0 
      errors.add_to_base("File size for _#{@original_filename}_
(#{@size}) is invalid. #{@title} #{@size} #{@original_filename}
#{@file}")
    else
      if @content_type != "jpg"
        errors.add_to_base("Invalid file type.")
      end
    end
  end
 ...
-----------------

My question:

This is the validation error I receive after submitting a file:

Title can''t be blankFile size for __ (0) is invalid. 0

As you can see the original filename and @size are not accessible in
validate_on_create..

Only self.title is a db column. The others are strictly for my model. 

I was told that i needed to use self.title for db column variables and
@variable in the other cases.

In my log file:

filename = Cibelle Photo 10.jpg
title = = Cibelle Photo 10.jpg
photo original name = Cibelle Photo 10.jpg
photo ext = jpg
photo title = Cibelle Photo 10.jpg

which is from these commands:

          logger.debug "filename = #{v.original_filename}"
          logger.debug "title = = #{p.title}"
        
       logger.debug "photo original name =
#{@photo.original_filename}"
       logger.debug "photo ext = #{@photo.extension}"
       logger.debug "photo title = #{@photo.title}"

so here it does work.. what is wrong? 

Thanks in advance