frontend\modules\user\models\UserMeta::isUserAction PHP Method

    public function isUserAction($type = 0, $do = '', $targetId)
    {
        return $this->find()->where(['target_id' => $targetId, 'user_id' => Yii::$app->user->id, 'target_type' => $type, 'type' => $do])->count();
    }

 public function getThanks()
 {
     $model = new UserMeta();
     return $model->isUserAction(self::TYPE, 'thanks', $this->id);
 }