instance method `number_to_currency`

Ruby on Rails 3.1.12

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

number_to_currency(number, options = {})

Formats a number into a currency string (e.g., $13.65). You can customize the format in the options hash.

Options

:locale - Sets the locale to be used for formatting (defaults to current locale).
:precision - Sets the level of precision (defaults to 2).
:unit - Sets the denomination of the currency (defaults to “$”).
:separator - Sets the separator between the units (defaults to “.”).
:delimiter - Sets the thousands delimiter (defaults to “,”).
:format - 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.
```

:negative_format - Sets the format for negative numbers (defaults to prepending

an 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.

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(-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;

Parameters

number req
options opt = {}

Source

# File actionpack/lib/action_view/helpers/number_helper.rb, line 111
      def number_to_currency(number, options = {})
        return unless number

        options.symbolize_keys!

        defaults  = I18n.translate(:'number.format', :locale => options[:locale], :default => {})
        currency  = I18n.translate(:'number.currency.format', :locale => options[:locale], :default => {})

        defaults  = DEFAULT_CURRENCY_VALUES.merge(defaults).merge!(currency)
        defaults[:negative_format] = "-" + options[:format] if options[:format]
        options   = defaults.merge!(options)

        unit      = options.delete(:unit)
        format    = options.delete(:format)

        if number.to_f < 0
          format = options.delete(:negative_format)
          number = number.respond_to?("abs") ? number.abs : number.sub(/^-/, '')
        end

        begin
          value = number_with_precision(number, options.merge(:raise => true))
          format.gsub(/%n/, value).gsub(/%u/, unit).html_safe
        rescue InvalidNumberError => e
          if options[:raise]
            raise
          else
            formatted_number = format.gsub(/%n/, e.number).gsub(/%u/, unit)
            e.number.to_s.html_safe? ? formatted_number.html_safe : formatted_number
          end
        end

      end

Defined in actionpack/lib/action_view/helpers/number_helper.rb line 111 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionView::Helpers::NumberHelper

Signature

Options

Examples

Parameters