From: Logan Capaldo <logancapaldo@...>
Date: 2006-08-30T06:12:51+09:00
Subject: Re: Testing a string's value is a positive integer


On Aug 29, 2006, at 12:00 PM, James Deuchar wrote:

> Hi,
>
> I'm trying to find an nice way of verifying that the value of a String
> object (from the RoR params) contains a positive integer value.
>

Isn't this a job for validates_numericality_of ?

validates_numericality_of :value, :only_integer => true
Ok, it doesn't check for postiveness as far as I can tell but, thats  
just value > 0 given that you know its an integer.

> Casting my string to_i and then testing that it is_a(Numeric) and  
> is > 0
> doesn't do the trick because the to_i method converts something like
> '1.1' to a Fixnum of value 1 which would then pass the test when it
> shouldn't...
>
> I feel certain I must be missing a trick here...am about to go down  
> the
> path of regexp which feels...wrong?
>
> Any advice for a newcomer would be gratefully received!
>
> Thanks
>
> James
>
>
>
> -- 
> Posted via http://www.ruby-forum.com/.
>