module ActiveSupport::NumericWithFormat

significant: false) # => "1,2 Million"
separator: ',',
1234567.to_fs(:human, precision: 1,
significant: false) # => "1.2346 Million"
1234567.to_fs(:human, precision: 4,
489939.to_fs(:human, precision: 4) # => "489.9 Thousand"
489939.to_fs(:human, precision: 2, round_mode: :down) # => "480 Thousand"
489939.to_fs(:human, precision: 2) # => "490 Thousand"
1234567890123456789.to_fs(:human) # => "1230 Quadrillion"
1234567890123456.to_fs(:human) # => "1.23 Quadrillion"
1234567890123.to_fs(:human) # => "1.23 Trillion"
1234567890.to_fs(:human) # => "1.23 Billion"
1234567.to_fs(:human) # => "1.23 Million"
12345.to_fs(:human) # => "12.3 Thousand"
1234.to_fs(:human) # => "1.23 Thousand"
123.to_fs(:human) # => "123"
Human-friendly format:

524288000.to_fs(:human_size, precision: 5) # => "500 MB"
1234567890123.to_fs(:human_size, precision: 5) # => "1.1228 TB"
1234567.to_fs(:human_size, precision: 2, separator: ',') # => "1,2 MB"
483989.to_fs(:human_size, precision: 2) # => "470 KB"
1234567.to_fs(:human_size, precision: 2, round_mode: :up) # => "1.3 MB"
1234567.to_fs(:human_size, precision: 2) # => "1.2 MB"
1234567890123456789.to_fs(:human_size) # => "1.07 EB"
1234567890123456.to_fs(:human_size) # => "1.1 PB"
1234567890123.to_fs(:human_size) # => "1.12 TB"
1234567890.to_fs(:human_size) # => "1.15 GB"
1234567.to_fs(:human_size) # => "1.18 MB"
12345.to_fs(:human_size) # => "12.1 KB"
1234.to_fs(:human_size) # => "1.21 KB"
123.to_fs(:human_size) # => "123 Bytes"
Human-friendly size in Bytes:

# => "1.111,23"
1111.2345.to_fs(:rounded, precision: 2, separator: ',', delimiter: '.')
389.32314.to_fs(:rounded, precision: 4, significant: true) # => "389.3"
# => "13"
13.to_fs(:rounded, precision: 5, significant: true, strip_insignificant_zeros: true)
111.234.to_fs(:rounded, locale: :fr) # => "111,234"
13.to_fs(:rounded, precision: 5, significant: true) # => "13.000"
111.2345.to_fs(:rounded, precision: 1, significant: true) # => "100"
111.2345.to_fs(:rounded, significant: true) # => "111"
389.32314.to_fs(:rounded, precision: 0) # => "389"
13.to_fs(:rounded, precision: 5) # => "13.00000"
111.2345.to_fs(:rounded, precision: 2, round_mode: :up) # => "111.24"
111.2345.to_fs(:rounded, precision: 2) # => "111.23"
111.2345.to_fs(:rounded) # => "111.235"
Rounded:

# => "98 765 432,98"
98765432.98.to_fs(:delimited, delimiter: ' ', separator: ',')
12345678.05.to_fs(:delimited, locale: :fr) # => "12 345 678,05"
12345678.05.to_fs(:delimited, separator: ' ') # => "12,345,678 05"
12345678.to_fs(:delimited, delimiter: ',') # => "12,345,678"
12345678.to_fs(:delimited, delimiter: '.') # => "12.345.678"
12345678.05.to_fs(:delimited) # => "12,345,678.05"
12345678.to_fs(:delimited) # => "12,345,678"
Delimited:

100.to_fs(:percentage, format: '%n %') # => "100.000 %"
1000.to_fs(:percentage, locale: :fr) # => "1 000,000%"
302.24398923423.to_fs(:percentage, round_mode: :down) # => "302.243%"
302.24398923423.to_fs(:percentage, precision: 5) # => "302.24399%"
1000.to_fs(:percentage, delimiter: '.', separator: ',') # => "1.000,000%"
100.to_fs(:percentage, precision: 0) # => "100%"
100.to_fs(:percentage) # => "100.000%"
Percentage:

# => "1234567890,50 £"
1234567890.50.to_fs(:currency, unit: '£', separator: ',', delimiter: '', format: '%n %u')
# => "£1234567890,50"
1234567890.50.to_fs(:currency, unit: '£', separator: ',', delimiter: '')
# => "($1,234,567,890.50)"
-1234567890.50.to_fs(:currency, negative_format: '(%u%n)')
1234567890.506.to_fs(:currency, locale: :fr) # => "1 234 567 890,51 €"
1234567890.506.to_fs(:currency, round_mode: :down) # => "$1,234,567,890.50"
1234567890.506.to_fs(:currency, precision: 3) # => "$1,234,567,890.506"
1234567890.506.to_fs(:currency) # => "$1,234,567,890.51"
1234567890.50.to_fs(:currency) # => "$1,234,567,890.50"
Currency:

# => "+1.123.555.1234 x 1343"
1235551234.to_fs(:phone, country_code: 1, extension: 1343, delimiter: '.')
1235551234.to_fs(:phone, country_code: 1) # => "+1-123-555-1234"
1235551234.to_fs(:phone, area_code: true, extension: 555) # => "(123) 555-1234 x 555"
1235551234.to_fs(:phone, delimiter: ' ') # => "123 555 1234"
1235551234.to_fs(:phone, area_code: true) # => "(123) 555-1234"
1235551234.to_fs(:phone) # => "123-555-1234"
5551234.to_fs(:phone) # => "555-1234"
Phone Numbers:

==== Examples

For details on which formats use which options, see ActiveSupport::NumberHelper

==== Options

This method is aliased to to_formatted_s.

precision, positional notation, file size, and pretty printing.
Options are provided for phone numbers, currency, percentage,
Provides options for converting numbers into formatted strings.

def to_fs(format = nil, options = nil)
  return to_s if format.nil?
  case format
  when Integer, String
    to_s(format)
  when :phone
    ActiveSupport::NumberHelper.number_to_phone(self, options || {})
  when :currency
    ActiveSupport::NumberHelper.number_to_currency(self, options || {})
  when :percentage
    ActiveSupport::NumberHelper.number_to_percentage(self, options || {})
  when :delimited
    ActiveSupport::NumberHelper.number_to_delimited(self, options || {})
  when :rounded
    ActiveSupport::NumberHelper.number_to_rounded(self, options || {})
  when :human
    ActiveSupport::NumberHelper.number_to_human(self, options || {})
  when :human_size
    ActiveSupport::NumberHelper.number_to_human_size(self, options || {})
  when Symbol
    to_s
  else
    to_s(format)
  end
end