def number_to_currency(number, options = {})
return nil if number.nil?
options.symbolize_keys!
defaults = I18n.translate('number.format''number.format', :locale => options[:locale], :default => {})
currency = I18n.translate('number.currency.format''number.currency.format', :locale => options[:locale], :default => {})
defaults = DEFAULT_CURRENCY_VALUES.merge(defaults).merge!(currency)
options = defaults.merge!(options)
unit = options.delete(:unit)
format = options.delete(:format)
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