问如何在CActiveForm中显示数据库的内容？

EN

<div class="form">
<?php

$form=$this->beginWidget('CActiveForm', array(
    'id'=>'login-form',
    'enableClientValidation'=>true,
    'clientOptions'=>array(
        'validateOnSubmit'=>true,
    ),
));

?>

    <p class="note">Fields with <span class="required">*</span> are required.</p>


    <div class="row buttons">
        <?php echo CHtml::submitButton('Login'); ?>
    </div>

    <div class="row radiobuttons">
        <?php echo CHtml::radioButtonList(
            $Paper,
            'Q1No',
            array('A'=>'A','B'=>'B','C'=>'C','D'=>'D'),
            array('template'=>'<span class="radio">{input}{label}</span>','separator'=>'')); 
        ?>
    </div>

<?php $this->endWidget(); ?>
</div><!-- form -->

    public function actionTaketest()
    {
        // Get the ID of the test paper from the URL ---ztm
        if(isset($_GET['paperid']))
        {
            $paperid=(int)$_GET['paperid'];
            $dsn = 'mysql:host=localhost;dbname=mydatabase';
            $username = 'root';
            $password = '000000';

            $connection=new CDbConnection($dsn,$username,$password);

            // establish connection. You may try...catch possible exceptions
            $connection->active=true;

            $rawData = Yii::app()->db->createCommand()
                ->select('*')
                ->from('Paper, Question') array(':PaperNo'=>$paperid))
                ->queryAll();

            $dataProvider=new CArrayDataProvider($rawData, array(
                'id'=>'PaperNo',
            ));


            $connection->active=false; // close connection


            $model=new LoginForm;
            $this->render('form',array('model'=>$model, 'dataProvider'=>$dataProvider));

        }
        else
        {
            // Deny illegal access to the page ---ztm
            throw new CHttpException(404,'invalid request');
        }
    }