rails number_to_currency将数字转换为当前区域下的货币表示

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number_to_currency(number, options = {})Link
Instance Public methods

Formats a number into a currency string (e.g., $13.65). Youcan customize the format in theoptions hash.

Options

:locale - Sets the locale to be used for formatting (defaultsto 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 (defaultsto "%u%n"). Fields are%u for the currency, and%n for the number.
:negative_format - Sets the format for negative numbers(defaults to prepending an hyphen to the formatted number given by:format). Accepts the same fields than:format,except %n is here the absolute value of the number.

Examples

number_to_currency(1234567890.50)                # => $1,234,567,890.50number_to_currency(1234567890.506)               # => $1,234,567,890.51number_to_currency(1234567890.506, precision: 3) # => $1,234,567,890.506number_to_currency(1234567890.506, locale: :fr)  # => 1 234 567 890,51 €number_to_currency('123a456')                    # => $123a456number_to_currency(-1234567890.50, negative_format: '(%u%n)')# => ($1,234,567,890.50)number_to_currency(1234567890.50, unit: '&pound;', separator: ',', delimiter: '')# => &pound;1234567890,50number_to_currency(1234567890.50, unit: '&pound;', separator: ',', delimiter: '', format: '%n %u')# => 1234567890,50 &pound;