Rails: Is there a rails trick to adding commas to large numbers?

Question

Is there a way to have rails print out a number with commas in it?

For example, if I have a number 54000000.34, I can run <%= number.function %>, which would prin

Answer 1

Another solution that does not use Helpers: format with 2 decimal places, and then replace . by ,

puts(("%.2f" % 2.5666).gsub('.',','))
>> 2,57