Wolf provides a simple “previous” and ”next” function. previous returns an array of values relating to the page preceding the current page, if it exists.¹⁾ It is thus not used on its own, but normally would be used in the Layout to provide a link to the “preceding” page.

The following code tests to see if a “previous” page exists. If it does, it makes a link accompanied by a label with a double-arrow pointing left:

<?php if ($previous = $this->previous()): ?>
  <div style="float: left; border-top: thin solid #ccc; padding-top: 4px;"><?php echo $previous->link(); ?> &#171; Previous</div>
<?php endif; ?>

See also next.