The best solution to keep files in database (Rails)

I would like to know what will be the best way to save binary files 'in database'. Of course they wi开发者_如何学JAVAll be on the disk as files, but i need some 'link' to them in the DB. Any great solutions?

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Use Paperclip to attach a file to a model.

Say you have a mortgage that has a document

class Mortgage < ActiveRecord::Base
  has_attached_file :document
end

Later:

mortgage = Mortgage.find(params[:id])
document = mortgage.document

Paperclip is usually used with images, but works with all types of files. You can easily store on s3 as well.

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If you don't have anything against mongodb and gridfs, there's an example here http://socialmemorycomplex.net/2010/06/02/gridfs-with-mongoid-and-carrierwave-on-rails-3/