Rails - May 2006 - How to check if a given string is a valid float value or not

I can''t use active record or anything. I need to validate inside the
controller.  I thought I could use to_f in the string method. The problem is
that for a value of 1.3fsfs it returns 1.0 . I thought it would be
consistently 0.0 . I can get a hack around it but looking for an elegant
solution.

Thanks.
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Neeraj Kumar wrote:
> I can''t use active record or anything. I need to validate inside
the
> controller.  I thought I could use to_f in the string method. The 
> problem is
> that for a value of 1.3fsfs it returns 1.0 . I thought it would be
> consistently 0.0 . I can get a hack around it but looking for an elegant
> solution.
> 
> Thanks.
I think ActiveRecord just tries to call Kernel.Float(string) to see if 
it can be converted properly.  This is also how I do it for a similar 
validation.

   Jake

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