From: Abder-Rahman Ali <abder.rahman.ali@...>
Date: 2010-09-20T21:02:39+09:00
Subject: name =  upload['datafile'].original_filename

At: http://www.tutorialspoint.com/ruby-on-rails/rails-file-uploading.htm

And, regarding:

name =  upload['datafile'].original_filename

It mentions that "upload" is a CGI object.

If you look at the header of the function this line is part of:

  def self.save(upload)

It seems that there is an argument "upload".

But, in the body, when we say:

upload['datafile']

Is "upload" here the same as the passed argument?

And, what about ['datafile'], what does it represent here? And, from
where is it passed?

Thanks.
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