AjaxSubmitButton in Yii framework does not save - php

Question

after succeeding in not refreshing the page after submission, my ajaxSubmitButton does not save the data. When I click on the button, it removes the content of the input fields but does not save the data. No message is displayed despite the error and success parameters.
In my form submission, the code for submit button is the following
<?php echo CHtml::ajaxSubmitButton(
'Save',
Yii::app()->createUrl('post/viewComment'),
array(
'success'=>'js:function(data){
alert("commentSubmitted");}',
'error'=>'js:function(data){
alert("comment NOT Submitted");}',
)
);
?>
My controller action code is
public function actionViewComment()
{
$post=$this->loadModel();
$comment=$this->newComment($post);
$this->renderPartial('_viewComment',array(
'model'=>$post,
'comment'=>$comment,
));
the viewCommment view, display the _view view to list the comments and at the end display the _form view to make the user input the new comment
the newComment function contains the following
protected function newComment($post)
{
$comment=new Comment;
if(isset($_POST['ajax']) && $_POST['ajax']==='comment-form')
{
echo CActiveForm::validate($comment);
Yii::app()->end();
}
if(isset($_POST['Comment']))
{
$comment->attributes=$_POST['Comment'];
if($post->addComment($comment))
{
if($comment->status==Comment::STATUS_PENDING)
Yii::app()->user->setFlash('commentSubmitted','Thank you for your comment. Your comment will be posted once it is approved.');
$this->refresh();
}
}
return $comment;
}
Actually, I use the blog demo from Yii Framework, I though it was a good starting point to learn Yii Framework.
the home page display list of posts. (it renderPartial _view.php.)
I create the ajax button to be able to list the commments associated with a given post and display an input form for new comment at the bottom of the form.
I added a second button with the "classical submit"
<?php echo CHtml::submitButton($model->isNewRecord ? 'Submit' : 'Save'); ?>
it works but redirect me to the list of the comments, that's what I wanted to avoid;
By using AjaxsubmitButton. When I put my cursor over the classical button or the Ajax button, the link is the same ...../blog/index.php/post/viewComment?id=...
The display is the following
post 1
post 2
comment 1
comment 2
comment 3
Add comment
Input Field
AjaxSubmit Button
post 3
and when I click on the ajaxsubmit button, I have the following
post 1
post 2
comment 1
comment 2
comment 3
Add comment
Input Field
AjaxSubmit Button
Add comment
Input Field
AjaxSubmit Button
post 3
So I got a second form window below the first one. And the comment is not saved.
Thank you in advance for your help

Answer 1

You are processing the data from POST. But you didn't mention in code.
<?php echo CHtml::ajaxSubmitButton(
'Save',
Yii::app()->createUrl('post/viewComment'),
array(
'type'=>'POST',
'dataType'=>'json',
'success'=>'js:function(data){
alert("commentSubmitted");}',
'error'=>'js:function(data){
alert("comment NOT Submitted");}',
)
);
?>