attachment_fu attributes in db

I'm using file_column for upload images.
now,I want to use the plugin attachment_fu.

I have seen that for use it, i must create the attributes like:

class CreateMugshots < ActiveRecord::Migration

  def self.up
    create_table :mugshots do |t|
      t.column :parent_id, :integer
      t.column :content_type, :string
      t.column :filename, :string
      t.column :thumbnail, :string
      t.column :size, :integer
      t.column :width, :integer
      t.column :height, :integer

is possible create onli the attribute filename?

At the very least you need filename, content_type, and possibly size.
If you are not uploading images at all then you can skip height and
width. If you are not going to create thumbnails then you can skip
thumbnail and parent_id.

mmm..i am uploading images but i cant change the db.
is possible not user height and width?

AndyV wrote: