From: Axel Schmalowsky <aschmalowsky@...>
Date: 2009-07-14T16:18:28+09:00
Subject: Re: a regex that does not contain comma

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Sijo Kg wrote:
> Hi
>    Could anybody please tell how to write the validates_format_of a
> string(in rails) which is only valid when it does not contain a
> comma.For example
>
> The are valid
>
> hi welcome
> Hello
> h123 kk
> hh gg hh
>
> The are not valid
>
> Hello,
> Hi , world
> Hello,welcome
>
You could try sth like this:

unless ( string =~ /((?>\w+\s*(?=,))+)/ )
    do something
end

If the regexp above matches, than there's a comma somewhere in your string.

> Thanks in advnce
> Sijo

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Freundliche Gr����e / Kind regards

Axel Schmalowsky
Platform Engineer
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