/**
* Called when a grid field is saved, converts the StatefulGridFieldList to a RelationList
* @param {GridField} $field
* @param {DataObjectInterface} $record
*/
public function handleSave(GridField $grid, DataObjectInterface $record)
{
$list = $grid->getList();
if ($list instanceof StatefulGridFieldList) {
$relationName = $list->getRelationName();
if ($record->has_many($relationName)) {
$list->changeToList($record->getComponents($list->getRelationName()));
} else {
if ($record->many_many($relationName)) {
$list->changeToList($record->getManyManyComponents($list->getRelationName()));
} else {
throw new InvalidArgumentException('Record does not have a has_many or many_many relationship called "' . $relationName . '"', null, null);
}
}
}
}
