[pmwiki-users] pagelist sorting

[Hans]

Monday, March 5, 2007, 11:46:06 PM, Hans wrote:

> for the pagelist order= functions, PmWiki allows the creation of custom
> order functions. See
> http://www.pmwiki.org/wiki/PmWiki/CustomPagelistSortOrder

> Maybe a custom function can be created which would process a page
> text variable to create a numeric page order.
> order=Books  a la method 2.

Here is a custom PagelistSortOrder function for sorting pages by numerical
pagetextvar data:

Add to local config (or recipe script:

# sorting pages by numerical pagetext var data
function NumericDataCompare($x, $y, $var) {
      # get integer value of the page text variable
      $xval = intval(PageTextVar($x, $var));
      $yval = intval(PageTextVar($y, $var));
      # compare integer values
      if($xval > $yval) $c = 1;
      elseif($xval < $yval) $c = -1;
      else $c = 0;
      return $c;
}

# defining order=books to sort numerical by pagetextvar $:Books
$PageListSortCmp['books'] = 'NumericDataCompare($x, $y, "Books")';

Then use in your pagelist directive with order=books (numerical sort
smallest number first) or order=-books (largest number first)

For other page text variables just create another array item for
$PageListSortCmp, as done above with "Books"


Hans