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<?php
/**
* @link https://github.com/paulzi/yii2-nested-sets
* @copyright Copyright (c) 2015 PaulZi <pavel.zimakoff@gmail.com>
* @license MIT (https://github.com/paulzi/yii2-nested-sets/blob/master/LICENSE)
*/
namespace paulzi\nestedsets;
/**
* @author PaulZi <pavel.zimakoff@gmail.com>
*/
trait NestedSetsQueryTrait
{
/**
* @return \yii\db\ActiveQuery
*/
public function roots()
{
/** @var \yii\db\ActiveQuery $this */
$class = $this->modelClass;
$model = new $class;
return $this->andWhere([$model->leftAttribute => 1]);
}
}