From: botp <botpena@...>
Date: 2010-09-07T17:35:29+09:00
Subject: Re: Round to two decimal place

On Tue, Sep 7, 2010 at 4:16 PM, Tom Mac <to.tom.mak@gmail.com> wrote:
> Hi
>   I have a variable  say  @price. It is either blank or has a value. If
> it is blank I have to show it like  $ 0.00  . So I wrote helper like
>
> @price.blank? ? '$'+'0.00' : '$'+@price.to_s
>
>
>     But the problem if @price has value 400.00  , after doing
> @price.to_s  it changes to 400.0  What I want is exactly  400.00 .And if
> I remove to_s above it will throw an error
> can't convert BigDecimal into String

try methods to_i,  to_f, and %

eg

> "$%6.2f" % " ".to_f
=> "$  0.00"
> "$%6.2f" % 400.to_f
=> "$400.00"

best regards -botp