/**
* Update a belongsToMany or morphToMany relation.
*
* @param \ProAI\Datamapper\Eloquent\Model $eloquentModel
* @param string $name
* @param string $action
* @return void
*/
protected function updateBelongsToManyRelation($eloquentModel, $name, $action)
{
$eloquentCollection = $eloquentModel->getRelation($name);
if (!$eloquentCollection instanceof \Illuminate\Database\Eloquent\Collection) {
throw new Exception("Many-to-many relation '" . $name . "' is not a valid collection");
}
// get related keys
$keys = [];
foreach ($eloquentCollection as $item) {
$keys[] = $item->getKey();
}
// attach/sync/detach keys
if ($action == 'insert') {
$eloquentModel->{$name}()->attach($keys);
}
if ($action == 'update') {
$eloquentModel->{$name}()->sync($keys);
}
if ($action == 'delete') {
$eloquentModel->{$name}()->detach($keys);
}
}
