/**
* Build filter items
*
* @param ORM_Iterator $events
* @return array
*/
public function _build_filters(ORM_Iterator $events)
{
$filters = array();
if ($events->count()) {
$cities = array();
// Build filter list
foreach ($events as $event) {
// Build city
$city = $event->city_id ? $event->city->city : $event->city_name;
$filter = url::title($city);
if (!isset($cities[$filter])) {
$cities[$filter] = utf8::ucfirst(utf8::strtolower($city));
}
}
// Drop empty to last
ksort($cities);
if (isset($cities[''])) {
$cities[url::title(__('Elsewhere'))] = utf8::ucfirst(utf8::strtolower(__('Elsewhere')));
unset($cities['']);
}
// Build city filter
$filters['city'] = array('name' => __('City'), 'filters' => $cities);
}
return $filters;
}