Re: Combining default! and ?number

Maybe this would work for you:

(pageArg?number)!1



On Tue, Apr 29, 2008 at 1:11 AM, Klotz, Leigh <[email protected]> wrote:
> In FM 2.3.12, I'd like to assign a variable to be a number which is
>  either parsed from a string parameter (perhaps from a query string), or
>  default it to a fixed constant.  I'm not sure if there's a concise
>  syntax for doing this.
>
>  The first code I saw to do this was like this:
>   <#assign page>${pageArg!1}</#assign>                   [1]
>
>  But then all users from then on had to do
>     page?number + 1
>  to refer to it.  Unfortunately, that fails because page is now a number,
>  and next time, page?number will fail.
>
>  So I changed it to this:
>
>  <#assign page = pageArg!1 />
>
>  This works when pageArg isn't specified, as does this
>    page + 1
>  work properly on every iteration.
>
>  However, when pageArg it specified, it turns page into a string, so it
>  fails again.
>
>  So then I tried
>
>  <#assign page = pageArg?number!1 />
>
>  but that fails because when pageArg is null, pageArg?number fails.
>
>  So my next theory was to use #if, which takes me back to
>
>  <#assign page><#if
>  pageArg?is_defined>${pageArg?number}<#else>1</#if></#assign>
>  but I can see already that would fail beacuse of [1] above.
>
>  That leaves
>  <#assign page = 1 >
>  <#if pageArg?is_defined>
>   <#assign page = pageArg?number}
>  </#assign>
>
>  This seems a bit cumbersome.
>
>  Is there some special syntax I'm missing for defaulting numeric values
>  from optional strings?!?!
>
>  Leigh.
>
>
>
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