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rails--rails/activesupport/lib/active_support/number_helper.rb
Mike Dalessio 900ce92c9d
Avoid use of exceptions to detect invalid floats 
Use Kernel::Float(..., exceptions:false) instead of a rescue block in
ActionView::Helpers::NumberHelper and
ActiveSupport::NumberHelper::NumberConverter to slightly improve
performance.

Also remove documentation that incorrectly states
ActiveSupport::NumberHelper supports the `raise:` option.
2021-08-25 21:44:45 -04:00

395 lines
19 KiB
Ruby
Raw Blame History

# frozen_string_literal: true
module ActiveSupport
module NumberHelper
extend ActiveSupport::Autoload
eager_autoload do
autoload :NumberConverter
autoload :RoundingHelper
autoload :NumberToRoundedConverter
autoload :NumberToDelimitedConverter
autoload :NumberToHumanConverter
autoload :NumberToHumanSizeConverter
autoload :NumberToPhoneConverter
autoload :NumberToCurrencyConverter
autoload :NumberToPercentageConverter
end
extend self
# Formats a +number+ into a phone number (US by default e.g., (555)
# 123-9876). You can customize the format in the +options+ hash.
#
# ==== Options
#
# * <tt>:area_code</tt> - Adds parentheses around the area code.
# * <tt>:delimiter</tt> - Specifies the delimiter to use
# (defaults to "-").
# * <tt>:extension</tt> - Specifies an extension to add to the
# end of the generated number.
# * <tt>:country_code</tt> - Sets the country code for the phone
# number.
# * <tt>:pattern</tt> - Specifies how the number is divided into three
# groups with the custom regexp to override the default format.
# ==== Examples
#
# number_to_phone(5551234) # => "555-1234"
# number_to_phone('5551234') # => "555-1234"
# number_to_phone(1235551234) # => "123-555-1234"
# number_to_phone(1235551234, area_code: true) # => "(123) 555-1234"
# number_to_phone(1235551234, delimiter: ' ') # => "123 555 1234"
# number_to_phone(1235551234, area_code: true, extension: 555) # => "(123) 555-1234 x 555"
# number_to_phone(1235551234, country_code: 1) # => "+1-123-555-1234"
# number_to_phone('123a456') # => "123a456"
#
# number_to_phone(1235551234, country_code: 1, extension: 1343, delimiter: '.')
# # => "+1.123.555.1234 x 1343"
#
# number_to_phone(75561234567, pattern: /(\d{1,4})(\d{4})(\d{4})$/, area_code: true)
# # => "(755) 6123-4567"
# number_to_phone(13312345678, pattern: /(\d{3})(\d{4})(\d{4})$/)
# # => "133-1234-5678"
def number_to_phone(number, options = {})
NumberToPhoneConverter.convert(number, options)
end
# Formats a +number+ into a currency string (e.g., $13.65). You
# can customize the format in the +options+ hash.
#
# The currency unit and number formatting of the current locale will be used
# unless otherwise specified in the provided options. No currency conversion
# is performed. If the user is given a way to change their locale, they will
# also be able to change the relative value of the currency displayed with
# this helper. If your application will ever support multiple locales, you
# may want to specify a constant <tt>:locale</tt> option or consider
# using a library capable of currency conversion.
#
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
# (defaults to current locale).
# * <tt>:precision</tt> - Sets the level of precision (defaults
# to 2).
# * <tt>:round_mode</tt> - Determine how rounding is performed
# (defaults to :default. See BigDecimal::mode)
# * <tt>:unit</tt> - Sets the denomination of the currency
# (defaults to "$").
# * <tt>:separator</tt> - Sets the separator between the units
# (defaults to ".").
# * <tt>:delimiter</tt> - Sets the thousands delimiter (defaults
# to ",").
# * <tt>:format</tt> - Sets the format for non-negative numbers
# (defaults to "%u%n"). Fields are <tt>%u</tt> for the
# currency, and <tt>%n</tt> for the number.
# * <tt>:negative_format</tt> - Sets the format for negative
# numbers (defaults to prepending a hyphen to the formatted
# number given by <tt>:format</tt>). Accepts the same fields
# than <tt>:format</tt>, except <tt>%n</tt> is here the
# absolute value of the number.
# * <tt>:strip_insignificant_zeros</tt> - If +true+ removes
# insignificant zeros after the decimal separator (defaults to
# +false+).
#
# ==== Examples
#
# number_to_currency(1234567890.50) # => "$1,234,567,890.50"
# number_to_currency(1234567890.506) # => "$1,234,567,890.51"
# number_to_currency(1234567890.506, precision: 3) # => "$1,234,567,890.506"
# number_to_currency(1234567890.506, locale: :fr) # => "1 234 567 890,51 €"
# number_to_currency('123a456') # => "$123a456"
#
# number_to_currency(-0.456789, precision: 0)
# # => "$0"
# number_to_currency(-1234567890.50, negative_format: '(%u%n)')
# # => "($1,234,567,890.50)"
# number_to_currency(1234567890.50, unit: '&pound;', separator: ',', delimiter: '')
# # => "&pound;1234567890,50"
# number_to_currency(1234567890.50, unit: '&pound;', separator: ',', delimiter: '', format: '%n %u')
# # => "1234567890,50 &pound;"
# number_to_currency(1234567890.50, strip_insignificant_zeros: true)
# # => "$1,234,567,890.5"
# number_to_currency(1234567890.50, precision: 0, round_mode: :up)
# # => "$1,234,567,891"
def number_to_currency(number, options = {})
NumberToCurrencyConverter.convert(number, options)
end
# Formats a +number+ as a percentage string (e.g., 65%). You can
# customize the format in the +options+ hash.
#
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
# (defaults to current locale).
# * <tt>:precision</tt> - Sets the precision of the number
# (defaults to 3). Keeps the number's precision if +nil+.
# * <tt>:round_mode</tt> - Determine how rounding is performed
# (defaults to :default. See BigDecimal::mode)
# * <tt>:significant</tt> - If +true+, precision will be the number
# of significant_digits. If +false+, the number of fractional
# digits (defaults to +false+).
# * <tt>:separator</tt> - Sets the separator between the
# fractional and integer digits (defaults to ".").
# * <tt>:delimiter</tt> - Sets the thousands delimiter (defaults
# to "").
# * <tt>:strip_insignificant_zeros</tt> - If +true+ removes
# insignificant zeros after the decimal separator (defaults to
# +false+).
# * <tt>:format</tt> - Specifies the format of the percentage
# string The number field is <tt>%n</tt> (defaults to "%n%").
#
# ==== Examples
#
# number_to_percentage(100) # => "100.000%"
# number_to_percentage('98') # => "98.000%"
# number_to_percentage(100, precision: 0) # => "100%"
# number_to_percentage(1000, delimiter: '.', separator: ',') # => "1.000,000%"
# number_to_percentage(302.24398923423, precision: 5) # => "302.24399%"
# number_to_percentage(1000, locale: :fr) # => "1000,000%"
# number_to_percentage(1000, precision: nil) # => "1000%"
# number_to_percentage('98a') # => "98a%"
# number_to_percentage(100, format: '%n %') # => "100.000 %"
# number_to_percentage(302.24398923423, precision: 5, round_mode: :down) # => "302.24398%"
def number_to_percentage(number, options = {})
NumberToPercentageConverter.convert(number, options)
end
# Formats a +number+ with grouped thousands using +delimiter+
# (e.g., 12,324). You can customize the format in the +options+
# hash.
#
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
# (defaults to current locale).
# * <tt>:delimiter</tt> - Sets the thousands delimiter (defaults
# to ",").
# * <tt>:separator</tt> - Sets the separator between the
# fractional and integer digits (defaults to ".").
# * <tt>:delimiter_pattern</tt> - Sets a custom regular expression used for
# deriving the placement of delimiter. Helpful when using currency formats
# like INR.
#
# ==== Examples
#
# number_to_delimited(12345678) # => "12,345,678"
# number_to_delimited('123456') # => "123,456"
# number_to_delimited(12345678.05) # => "12,345,678.05"
# number_to_delimited(12345678, delimiter: '.') # => "12.345.678"
# number_to_delimited(12345678, delimiter: ',') # => "12,345,678"
# number_to_delimited(12345678.05, separator: ' ') # => "12,345,678 05"
# number_to_delimited(12345678.05, locale: :fr) # => "12 345 678,05"
# number_to_delimited('112a') # => "112a"
# number_to_delimited(98765432.98, delimiter: ' ', separator: ',')
# # => "98 765 432,98"
# number_to_delimited("123456.78",
# delimiter_pattern: /(\d+?)(?=(\d\d)+(\d)(?!\d))/)
# # => "1,23,456.78"
def number_to_delimited(number, options = {})
NumberToDelimitedConverter.convert(number, options)
end
# Formats a +number+ with the specified level of
# <tt>:precision</tt> (e.g., 112.32 has a precision of 2 if
# +:significant+ is +false+, and 5 if +:significant+ is +true+).
# You can customize the format in the +options+ hash.
#
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
# (defaults to current locale).
# * <tt>:precision</tt> - Sets the precision of the number
# (defaults to 3). Keeps the number's precision if +nil+.
# * <tt>:round_mode</tt> - Determine how rounding is performed
# (defaults to :default. See BigDecimal::mode)
# * <tt>:significant</tt> - If +true+, precision will be the number
# of significant_digits. If +false+, the number of fractional
# digits (defaults to +false+).
# * <tt>:separator</tt> - Sets the separator between the
# fractional and integer digits (defaults to ".").
# * <tt>:delimiter</tt> - Sets the thousands delimiter (defaults
# to "").
# * <tt>:strip_insignificant_zeros</tt> - If +true+ removes
# insignificant zeros after the decimal separator (defaults to
# +false+).
#
# ==== Examples
#
# number_to_rounded(111.2345) # => "111.235"
# number_to_rounded(111.2345, precision: 2) # => "111.23"
# number_to_rounded(13, precision: 5) # => "13.00000"
# number_to_rounded(389.32314, precision: 0) # => "389"
# number_to_rounded(111.2345, significant: true) # => "111"
# number_to_rounded(111.2345, precision: 1, significant: true) # => "100"
# number_to_rounded(13, precision: 5, significant: true) # => "13.000"
# number_to_rounded(13, precision: nil) # => "13"
# number_to_rounded(389.32314, precision: 0, round_mode: :up) # => "390"
# number_to_rounded(111.234, locale: :fr) # => "111,234"
#
# number_to_rounded(13, precision: 5, significant: true, strip_insignificant_zeros: true)
# # => "13"
#
# number_to_rounded(389.32314, precision: 4, significant: true) # => "389.3"
# number_to_rounded(1111.2345, precision: 2, separator: ',', delimiter: '.')
# # => "1.111,23"
def number_to_rounded(number, options = {})
NumberToRoundedConverter.convert(number, options)
end
# Formats the bytes in +number+ into a more understandable
# representation (e.g., giving it 1500 yields 1.46 KB). This
# method is useful for reporting file sizes to users. You can
# customize the format in the +options+ hash.
#
# See <tt>number_to_human</tt> if you want to pretty-print a
# generic number.
#
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
# (defaults to current locale).
# * <tt>:precision</tt> - Sets the precision of the number
# (defaults to 3).
# * <tt>:round_mode</tt> - Determine how rounding is performed
# (defaults to :default. See BigDecimal::mode)
# * <tt>:significant</tt> - If +true+, precision will be the number
# of significant_digits. If +false+, the number of fractional
# digits (defaults to +true+)
# * <tt>:separator</tt> - Sets the separator between the
# fractional and integer digits (defaults to ".").
# * <tt>:delimiter</tt> - Sets the thousands delimiter (defaults
# to "").
# * <tt>:strip_insignificant_zeros</tt> - If +true+ removes
# insignificant zeros after the decimal separator (defaults to
# +true+)
#
# ==== Examples
#
# number_to_human_size(123) # => "123 Bytes"
# number_to_human_size(1234) # => "1.21 KB"
# number_to_human_size(12345) # => "12.1 KB"
# number_to_human_size(1234567) # => "1.18 MB"
# number_to_human_size(1234567890) # => "1.15 GB"
# number_to_human_size(1234567890123) # => "1.12 TB"
# number_to_human_size(1234567890123456) # => "1.1 PB"
# number_to_human_size(1234567890123456789) # => "1.07 EB"
# number_to_human_size(1234567, precision: 2) # => "1.2 MB"
# number_to_human_size(483989, precision: 2) # => "470 KB"
# number_to_human_size(483989, precision: 2, round_mode: :up) # => "480 KB"
# number_to_human_size(1234567, precision: 2, separator: ',') # => "1,2 MB"
# number_to_human_size(1234567890123, precision: 5) # => "1.1228 TB"
# number_to_human_size(524288000, precision: 5) # => "500 MB"
def number_to_human_size(number, options = {})
NumberToHumanSizeConverter.convert(number, options)
end
# Pretty prints (formats and approximates) a number in a way it
# is more readable by humans (e.g.: 1200000000 becomes "1.2
# Billion"). This is useful for numbers that can get very large
# (and too hard to read).
#
# See <tt>number_to_human_size</tt> if you want to print a file
# size.
#
# You can also define your own unit-quantifier names if you want
# to use other decimal units (e.g.: 1500 becomes "1.5
# kilometers", 0.150 becomes "150 milliliters", etc). You may
# define a wide range of unit quantifiers, even fractional ones
# (centi, deci, mili, etc).
#
# ==== Options
#
# * <tt>:locale</tt> - Sets the locale to be used for formatting
# (defaults to current locale).
# * <tt>:precision</tt> - Sets the precision of the number
# (defaults to 3).
# * <tt>:round_mode</tt> - Determine how rounding is performed
# (defaults to :default. See BigDecimal::mode)
# * <tt>:significant</tt> - If +true+, precision will be the number
# of significant_digits. If +false+, the number of fractional
# digits (defaults to +true+)
# * <tt>:separator</tt> - Sets the separator between the
# fractional and integer digits (defaults to ".").
# * <tt>:delimiter</tt> - Sets the thousands delimiter (defaults
# to "").
# * <tt>:strip_insignificant_zeros</tt> - If +true+ removes
# insignificant zeros after the decimal separator (defaults to
# +true+)
# * <tt>:units</tt> - A Hash of unit quantifier names. Or a
# string containing an i18n scope where to find this hash. It
# might have the following keys:
# * *integers*: <tt>:unit</tt>, <tt>:ten</tt>,
# <tt>:hundred</tt>, <tt>:thousand</tt>, <tt>:million</tt>,
# <tt>:billion</tt>, <tt>:trillion</tt>,
# <tt>:quadrillion</tt>
# * *fractionals*: <tt>:deci</tt>, <tt>:centi</tt>,
# <tt>:mili</tt>, <tt>:micro</tt>, <tt>:nano</tt>,
# <tt>:pico</tt>, <tt>:femto</tt>
# * <tt>:format</tt> - Sets the format of the output string
# (defaults to "%n %u"). The field types are:
# * %u - The quantifier (ex.: 'thousand')
# * %n - The number
#
# ==== Examples
#
# number_to_human(123) # => "123"
# number_to_human(1234) # => "1.23 Thousand"
# number_to_human(12345) # => "12.3 Thousand"
# number_to_human(1234567) # => "1.23 Million"
# number_to_human(1234567890) # => "1.23 Billion"
# number_to_human(1234567890123) # => "1.23 Trillion"
# number_to_human(1234567890123456) # => "1.23 Quadrillion"
# number_to_human(1234567890123456789) # => "1230 Quadrillion"
# number_to_human(489939, precision: 2) # => "490 Thousand"
# number_to_human(489939, precision: 4) # => "489.9 Thousand"
# number_to_human(489939, precision: 2
# , round_mode: :down) # => "480 Thousand"
# number_to_human(1234567, precision: 4,
# significant: false) # => "1.2346 Million"
# number_to_human(1234567, precision: 1,
# separator: ',',
# significant: false) # => "1,2 Million"
#
# number_to_human(500000000, precision: 5) # => "500 Million"
# number_to_human(12345012345, significant: false) # => "12.345 Billion"
#
# Non-significant zeros after the decimal separator are stripped
# out by default (set <tt>:strip_insignificant_zeros</tt> to
# +false+ to change that):
#
# number_to_human(12.00001) # => "12"
# number_to_human(12.00001, strip_insignificant_zeros: false) # => "12.0"
#
# ==== Custom Unit Quantifiers
#
# You can also use your own custom unit quantifiers:
# number_to_human(500000, units: { unit: 'ml', thousand: 'lt' }) # => "500 lt"
#
# If in your I18n locale you have:
#
# distance:
# centi:
# one: "centimeter"
# other: "centimeters"
# unit:
# one: "meter"
# other: "meters"
# thousand:
# one: "kilometer"
# other: "kilometers"
# billion: "gazillion-distance"
#
# Then you could do:
#
# number_to_human(543934, units: :distance) # => "544 kilometers"
# number_to_human(54393498, units: :distance) # => "54400 kilometers"
# number_to_human(54393498000, units: :distance) # => "54.4 gazillion-distance"
# number_to_human(343, units: :distance, precision: 1) # => "300 meters"
# number_to_human(1, units: :distance) # => "1 meter"
# number_to_human(0.34, units: :distance) # => "34 centimeters"
def number_to_human(number, options = {})
NumberToHumanConverter.convert(number, options)
end
end
end
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