Putting commas in floats to seperate hundreds from thousands etc

ruby-talk
1

I have the following code:

class Float
  def to_dollars_with_cents
    format("$%.2f", self)
  end
end

This way in rails I can go:

@summary.job_cost.to_dollars_with_cents

The output comes out as: $1900000.00

I would prefer to format it as: $1,900,000.00

How would you suggest I do that?

Your Friend,

John

···

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John Kopanas
john@kopanas.com

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2

Easier:
http://api.rubyonrails.com/classes/ActionView/Helpers/NumberHelper.html#M000517

···

On Jan 24, 11:44 am, "John Kopanas" <kopa...@gmail.com> wrote:

This way in rails I can go:

@summary.job_cost.to_dollars_with_cents

3

The latest edition of Mastering Regular Expressions suggests the
following regex for commafication:

/(\d)(?=(\d\d\d)+(?!\d))/$1,/

Haven't tried look ahead in Ruby but I think this may work for you,
perhaps with some special handling of the "cents" portion of the
amount.

Ken

···

On Jan 24, 11:01 am, "Phrogz" <g...@refinery.com> wrote:

On Jan 24, 11:44 am, "John Kopanas" <kopa...@gmail.com> wrote:

> This way in rails I can go:

> @summary.job_cost.to_dollars_with_centsEasier:http://api.rubyonrails.com/classes/ActionView/Helpers/NumberHelper.ht\.\.\.