'required', 'key' => 'required', 'group' => 'required', ]; /** * @param $key * @return mixed */ public static function formatKey($key) { return str_replace('.', '_', strtolower($key)); } /** * Callbacks */ protected static function boot() { parent::boot(); static::creating(function (Setting $model) { if (!empty($model->id)) { $model->id = Setting::formatKey($model->id); } }); } }