Pretty file size in Ruby?

Question

I'm trying to make a method that converts an integer that represents bytes to a string with a 'prettied up' format.

Here's my half-working attempt:

class Integer
  def to_filesize
    {
      'B'  => 1024,
      'KB' => 1024 * 1024,
      'MB' => 1024 * 1024 * 1024,
      'GB' => 1024 * 1024 * 1024 * 1024,
      'TB' => 1024 * 1024 * 1024 * 1024 * 1024
    }.each_pair { |e, s| return "#{s / self}#{e}" if self < s }
  end
end

What am I doing wrong?

Answer 1

If you use it with Rails - what about standard Rails number helper?

http://api.rubyonrails.org/classes/ActionView/Helpers/NumberHelper.html#method-i-number_to_human_size

number_to_human_size(number, options = {})

?