Format currency values.

gistfile1.rb

# So I wrote this cute little currency view formatting helper. Enjoy.
#
# (On a side note, shortly after writing this, I decided to use the awesome
# Money gem in my project, rendering most of this code obsolete.)
#
def currency(v, options = {})
  options = {
    :symbol => "€",
    :separator => ".",
    :decimal_separator => ",",
    :format_string => "%{symbol} %{dollars}%{decimal_separator}%{cents}"
  }.merge(options)

  # Prepare value by converting, rounding and pushing through sprintf
  v = sprintf("%.2f", v.to_f.round(2))

  # Split dollars and cents
  dollars, cents = v.split('.')

  # Go wild with them dollars!
  dollars = dollars.reverse.gsub(/(\d{1,3})/, "#{options[:separator]}\\1").reverse.chomp('.')

  # That's it. Format value and return. Party is over.
  options[:format_string] % {
    :symbol => options[:symbol],
    :dollars => dollars,
    :decimal_separator => options[:decimal_separator],
    :cents => cents
  }
end