method

number_to_human_size

v1.2.6 - Show latest stable - 0 notes - Class: ActionView::Helpers::NumberHelper

number_to_human_size(size, precision=1) public

Formats the bytes in size into a more understandable representation. Useful for reporting file sizes to users. This method returns nil if size cannot be converted into a number. You can change the default precision of 1 in precision.

 number_to_human_size(123)           => 123 Bytes
 number_to_human_size(1234)          => 1.2 KB
 number_to_human_size(12345)         => 12.1 KB
 number_to_human_size(1234567)       => 1.2 MB
 number_to_human_size(1234567890)    => 1.1 GB
 number_to_human_size(1234567890123) => 1.1 TB
 number_to_human_size(1234567, 2)    => 1.18 MB

Show source

# File actionpack/lib/action_view/helpers/number_helper.rb, line 137
      def number_to_human_size(size, precision=1)
        size = Kernel.Float(size)
        case 
          when size == 1        : "1 Byte"
          when size < 1.kilobyte: "%d Bytes" % size
          when size < 1.megabyte: "%.#{precision}f KB"  % (size / 1.0.kilobyte)
          when size < 1.gigabyte: "%.#{precision}f MB"  % (size / 1.0.megabyte)
          when size < 1.terabyte: "%.#{precision}f GB"  % (size / 1.0.gigabyte)
          else                    "%.#{precision}f TB"  % (size / 1.0.terabyte)
        end.sub('.0', '')
      rescue
        nil
      end

number_to_human_size

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