public function saving($model)
{
$tag_model = new \App\Tag();
// RULES
if (is_array($model->tag_ids)) {
foreach ($model->tag_ids as $k => $v) {
$rules['tag_ids' . $k] = ['exists:' . $tag_model->getTable()];
}
} else {
$rules['tag_ids'] = ['exists:' . $tag_model->getTable()];
}
$validator = Validator::make($model->toArray(), $rules);
if ($validator->fails()) {
$model->setErrors($validator->messages());
return false;
}
}