/**
* Get information on the current state of the boolean checkbox facets.
*
* @return array
*/
public function getCheckboxFacets()
{
// Grab checkbox facet details using the standard method:
$facets = parent::getCheckboxFacets();
// Special case -- if we have a "holdings only" or "expand query" facet,
// we want this to always appear, even on the "no results" screen, since
// setting this facet actually EXPANDS rather than reduces the result set.
if (isset($facets['holdingsOnly'])) {
$facets['holdingsOnly']['alwaysVisible'] = true;
}
if (isset($facets['queryExpansion'])) {
$facets['queryExpansion']['alwaysVisible'] = true;
}
// Return modified list:
return $facets;
}
