/**
* Calculate the query parameters that should be inherited from the base many_many
* to the nested has_many list.
*
* @param DataQuery $query
* @return mixed
*/
public function extractInheritableQueryParameters(DataQuery $query)
{
$params = $query->getQueryParams();
// Remove `Foreign.` query parameters for created objects,
// as this would interfere with relations on those objects.
foreach (array_keys($params) as $key) {
if (stripos($key, 'Foreign.') === 0) {
unset($params[$key]);
}
}
// Get inheritable parameters from an instance of the base query dataclass
$inst = Injector::inst()->create($query->dataClass());
$inst->setSourceQueryParams($params);
return $inst->getInheritableQueryParams();
}