public static function randLocation($items = -1) {
$rawLocations = PkTestGenerator::randData(static::$ca_cities, $items);
if ($items === -1) return static::locationAssoc($rawLocations);
$assocLocs = [];
foreach ($rawLocations as $rawLocation) {
$assocLocs[] = static::locationAssoc($rawLocation);
}
return $assocLocs;
}
/**
* Return a random instance, or array (collection) of random instances
* @param integer $num: If -1 (default), return single instance.
* if ($num >= 0) return array/collection of $num instances
* @param array $params - Can be used by subclasses to filter
* @return instance|array instances -
*/
public static function getRandomInstances($num = -1, $params = [])
{
if ($num === 0) {
return [];
}
$instances = static::all();
$numinst = count($instances);
if (!$numinst) {
if ($num === -1) {
return null;
}
return [];
}
return PkTestGenerator::getRandomData($instances, $num);
}