/**
* getChapterHandleGrid
*
* @param Reference $reference
* @return array (2-D) of reference handle, ready for use in routes.
*/
public function getChapterHandleGrid(Reference $reference, $width = 10)
{
if ($quadruple = $reference->getFirstQuadruple()) {
list($b, $s, $c, $v) = $quadruple;
$chapters = $this->getChapters($b);
$handles = [];
foreach (range(1, $chapters) as $c) {
$r = $this->createReferenceFromBookAndChapter($b, $c);
$handles[] = $this->getHandle($r);
}
return array_chunk($handles, $width);
}
return [];
}
