How do I add file uploads to a rails app?

I need to add the ability to upload and store an开发者_StackOverflowy kind of file, PDF, XLS, DOC, etc. What is the best way to do this in a ruby on rails application?

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I think this is exactly what you're looking for.

Upload files.

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I'd recommend you to use paperclip or carrierwave both are really good libs and work out of the box in most cases.

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you can also look at attachment_fu rails.

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I've worked with two of the big players when it comes to file uploads. carrierwave and paperclip.

They provide a good solution for a common task with support for different storage alternatives. Both support filesystem and S3. Carrierwave also supports Rackspace Cloud Files and MongoDB’s GridFS.

I would recommend carrierwave because of one aspect where they are different to use. It uses a separate upload class that you mount on your model. This separates your code related to the file upload from the model code. I find this approach cleaner and easier to test.