Putting commas in floats to seperate hundreds from thousands

johnk · January 24, 2007, 7:45pm

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

johnk · January 24, 2007, 8:06pm

On Jan 24, 11:44 am, “John K.” [email protected] wrote:

This way in rails I can go:

@summary.job_cost.to_dollars_with_cents

johnk · January 24, 2007, 9:05pm

On Jan 24, 11:01 am, “Phrogz” [email protected] wrote:

On Jan 24, 11:44 am, “John K.” [email protected] wrote:

This way in rails I can go:

@summary.job_cost.to_dollars_with_centsEasier:Peak Obsession…

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