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UploadColumn is file uploading made easy for Ruby on Rails. Get rolling quickly, with powerful manipulation of uploaded files, like scaling and cropping images. Maintain full control over where your files are stored, easily make uploads work across form redisplays, and a whole bunch more.

attachment_fu facilitates file uploads in Ruby on Rails. There are a few storage options for the actual file data, but the plugin always at a minimum stores metadata for each file in the database.