multicomplete Follow @yiiframework

<?php $this->widget('path.to.multicomplete.MultiComplete', array(
          'model'=>$model,
          'attribute'=>'news_tags',
          'splitter'=>',',
          //'source'=>array('ac1', 'ac2', 'ac3'),
          'sourceUrl'=>'search.html',
          // additional javascript options for the autocomplete plugin
          'options'=>array(
                  'minLength'=>'2',
          ),
          'htmlOptions'=>array(
                  'size'=>'60'
          ),
  ));
  ?>

public function actionSearch()
     { //completion variants
      echo '[ 
       "ActionScript",
       "AppleScript",
       "Asp",
       "BASIC",
       "C",
       "C++",
       "Clojure",
       "COBOL",
       "ColdFusion",
       "Erlang",
       "Fortran",
       "Groovy",
       "Haskell",
       "Java",
       "JavaScript",
       "Lisp",
       "Perl",
       "PHP",
       "Python",
       "Ruby",
       "Scala",
       "Scheme"
      ]';
     }

public function actionSearch($term)
     {
          if(Yii::app()->request->isAjaxRequest && !empty($term))
        {
              $variants = array();
              $criteria = new CDbCriteria;
              $criteria->select='tag';
              $criteria->addSearchCondition('tag',$term.'%',false);
              $tags = tagsModel::model()->findAll($criteria);
              if(!empty($tags))
              {
                foreach($tags as $tag)
                {
                    $variants[] = $tag->attributes['tag'];
                }
              }
              echo CJSON::encode($variants);
        }
        else
            throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
     }