20100901203836_add_thumbnails_processed_to_image.rb 366 Bytes
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class AddThumbnailsProcessedToImage < ActiveRecord::Migration
  def self.up
     add_column :images, :thumbnails_processed, :boolean, :default => false
     # the pre-existing images already had their thumbnails created
     execute('update images set thumbnails_processed = (1>0)')
  end

  def self.down
     remove_column :images, :thumbnails_processed
  end
end