I have edited Comment module from a tutorial to review module.
In this module i using CStarRating widget. When view, submit, delete rate post it OK. but when i click edit/update, edit old post and click update to edit rate post then star don’t show, instead this radio group 
Here is code:
CommentList.php
<?php
/** @var CArrayDataProvider $comments */
$comments = $model->getCommentDataProvider();
$comments->setPagination(false);
$this->widget('zii.widgets.CListView', array(
'dataProvider'=>$comments,
'itemView'=>'comment.views.comment._view'
));
$this->renderPartial('comment.views.comment._form', array(
'comment'=>$model->commentInstance
));
_form.php
<br>
<br>
<?php if (Yii::app()->user->isGuest) {
?><div class="ext-comment-not-loggedin">
Sorry, you have to login to leave a comment.
</div><?php } else { ?>
<div id="ext-comment-form-<?php echo $comment->isNewRecord ? 'new' : 'edit-'.$comment->id; ?>" class="form" >
<nav id = "comment-a">
<?php $form = $this->beginWidget('CActiveForm', array(
'id'=>'ext-comment-form',
'action'=>array('/comment/comment/create'),
'enableAjaxValidation'=>false
)); ?>
<?php /** @var CActiveForm $form */
echo $form->errorSummary($comment); ?>
<div class="row">
<?php echo $form->labelEx($comment,'message'); ?>
<?php echo $form->textArea($comment,'message',array('rows'=>3, 'cols'=>76)); ?>
<?php echo $form->error($comment,'message'); ?>
</div>
<?php
$model=new Comment;
$colArr=$model->attributes;
for ($i = 0; $i < count($colArr); $i++) {
$key=key($colArr);
if (($key<> 'average') and ($key<>'id') and ($key<>'message') and ($key<>'userId')
and ($key<>'createDate') ){
$this->widget('CStarRating',array(
'name'=>'Comment['.$key.']',
'value'=>$model->$key,
'minRating'=>1, //minimal value
'maxRating'=>5,//max value
'starCount'=>5, //number of stars
));
echo " ".$model->getAttributeLabel($key)."<br>";
echo "<br>";}
next($colArr);
}
?>
<div class="row buttons">
<?php if ($comment->isNewRecord) {
echo "<br>";
echo $form->hiddenField($comment, 'type');
echo $form->hiddenField($comment, 'key');
echo CHtml::ajaxSubmitButton('Submit',
array('/comment/comment/create'),
array(
'replace'=>'#ext-comment-form-new',
'error'=>"function(){
$('#Comment_message').css('border-color', 'red');
$('#Comment_message').css('background-color', '#fcc');
}"
),
array('id'=>'ext-comment-submit' . (isset($ajaxId) ? $ajaxId : ''))
);
} else {
echo CHtml::ajaxSubmitButton('Update',
array('/comment/comment/update', 'id'=>$comment->id),
array(
'replace'=>'#ext-comment-form-edit-'.$comment->id,
'error'=>"function(){
$('#Comment_message').css('border-color', 'red');
$('#Comment_message').css('background-color', '#fcc');
}"
),
array('id'=>'ext-comment-submit' . (isset($ajaxId) ? $ajaxId : ''))
);
}
echo "<br>";
?>
</div>
<?php $this->endWidget() ?>
</nav>
</div><!-- form -->
<?php } ?>
_view.php
<?php
Yii::app()->clientScript->registerCss('ext-comment', "
div.ext-comment {
width: 100%;
min-height: 200px;
}
span.ext-comment-options {
float: right;
color: #aaa;
}
span.khung-left{
margin-left :5px;
}
td.nav-td1{
color: #cc3b1a;
}
p.test{
color : black;
}
nav.khungnav{
border-width:thin;
width:560px;
}
");
?>
<div class="ext-comment" id="ext-comment-<?php echo $data->id; ?>">
<nav id = "atext" >
<hr />
<div>
<span class="ext-comment-head">
wrote on
<span class="ext-comment-date">
<?php echo Yii::app()->format->formatDateTime(
is_numeric($data->createDate) ? $data->createDate : strtotime($data->createDate)
);
?>
</span>
</span>
<span class="ext-comment-options">
<?php if (!Yii::app()->user->isGuest && (Yii::app()->user->id == $data->userId)) {
echo CHtml::ajaxLink('delete', array('/comment/comment/delete', 'id'=>$data->id), array(
'success'=>'function(){ $("#ext-comment-'.$data->id.'").remove(); }',
'type'=>'POST',
), array(
'id'=>'delete-comment-'.$data->id,
'confirm'=>'Are you sure you want to delete this item?',
));
echo " | ";
echo CHtml::ajaxLink('edit', array('/comment/comment/update', 'id'=>$data->id), array(
'replace'=>'#ext-comment-'.$data->id,
'type'=>'GET',
), array(
'id'=>'ext-comment-edit-'.$data->id,
));
} ?>
</span>
<p id = "apa">
<br>
</p>
<table id = "atable">
<td id = "test123">
<?php
$model=new Comment;
$a=$data->id;
$colArr=$model->attributes;
for ($i = 0; $i < count($colArr); $i++) {
$key=key($colArr);
$val=$colArr[$key];
next($colArr);
if (($key<> 'average') and($key<>'id') and ($key<>'message')
and ($key<>'userId') and ($key<>'createDate') ) {
$a=$a+100;
echo $data->getAttributeLabel($key).' ('.$data->$key.')';
$this->widget('CStarRating',array(
'name'=>'Comment['.$a.']',
'value'=>$data->$key,
'minRating'=>1, //minimal value
'maxRating'=>5,//max value
'starCount'=>5, //number of stars
'readOnly'=>true,
));
}
echo "<br>";
}
?>
</td>
<td id = "average-teacher">
<p>
<?php echo nl2br(CHtml::encode($data->message)); ?>
</p>
</td>
</table>
<br style="clear: both;"/>
</div>
</nav>
</div>
Hope someone can help me 
And sorry about my english