/**
* Create a new tag if valid or return existing one
*
* @param string $name
* @param null|Tag $parent
*
* @return bool|$this
*/
public function validOrCreate($name, Tag $parent = null)
{
$group = $parent === null ? true : false;
$tag = $this->where('name', '=', $name)->first();
if ($tag && $tag->group != $group) {
return false;
}
if (!$tag) {
$tag = new Tag();
$tag->name = $name;
$tag->group = $group;
if (!is_null($parent)) {
$tag->parent_id = $parent->id;
$tag->setRelation('parent', $parent);
}
$tag->save();
}
return $tag;
}
