/**
* Get a list of units for an offering
* Accepts either a numeric array index or a string [id, name]
* If index, it'll return the entry matching that index in the list
* If string, it'll return either a list of IDs or names
*
* @param mixed $idx Index value
* @return array
*/
public function units($filters = array(), $clear = false)
{
if (!isset($filters['offering_id'])) {
$filters['offering_id'] = (int) $this->get('id');
}
if (!isset($filters['section_id'])) {
$filters['section_id'] = (int) $this->section()->get('id');
}
if (isset($filters['count']) && $filters['count']) {
$tbl = new Tables\Unit($this->_db);
return $tbl->count($filters);
}
if (!$this->_units instanceof Iterator || $clear) {
$tbl = new Tables\Unit($this->_db);
if ($results = $tbl->find($filters)) {
foreach ($results as $key => $result) {
if (!$result->section_id) {
$result->section_id = (int) $this->section()->get('id');
}
$results[$key] = new Unit($result);
}
} else {
$results = array();
}
$this->_units = new Iterator($results);
}
return $this->_units;
}