[pmwiki-users] Conditional markup with multi-line page variables

[Kathryn Andersen]

On Mon, Jun 30, 2008 at 06:09:43PM +0100, Andrew Thompson wrote:
> Perhaps I'm doing something stupid, but I've tried lots of variations,
> so this is possibly a bug.
> 
> My aim is to display the contents of a variable, with appropriate
> headings, only when the variable is set. If the variable has a
> single-line value, everything works perfectly, eg:

I solved this problem for myself in a different way, by making a
'notnull' condition, which works for multi-line variables as well as
single-line variables.
 
Added to local/config.php
---------------------------------------------------------------
# Provide notnull conditional
# (:if notnull $Var:)
# (:if notnull $Var PageName:)
$Conditions['notnull'] = 'NotNullCondition($pagename, $condparm)';

function NotNullCondition($pagename, $arg) {
    $arg = ParseArgs($arg);
    $varname = @$arg[''][0];
    if (@$arg[''][1]) // pagename
    {
        $pagename = $arg[''][1];
    }
    $val = PageVar($pagename, $varname);
    if ($val)
    {
        return true;
    }
    return false;
}

---------------------------------------------------------------

Kathryn Andersen
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