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