Stupid Problem With An Action, Please Help

Hi All,

I'm completely stuck with one problem, I think that I'm missing something and it must be really stupid error, but.. I can't find the solution and I have tried, I think, with everything.

I have a form where I display a partial view, this partial view contains a table with a ajax button which launch an action, (no problem for now). Once the action is executed, this refresh the table (with a renderPartial), but... I can't load the correct rows of my model!!!

For better understanding...

Here is my form with the partial view (views\post\_form.php):

<?php $form=$this->beginWidget('bootstrap.widgets.TbActiveForm', array(
    'id'=>'post-form',
	'type'=>'vertical',
	'enableAjaxValidation' => false,
	//This is very important when uploading files
	'htmlOptions' => array('enctype' => 'multipart/form-data'),
)); ?>

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

	<?php echo $form->errorSummary($model); ?>

	<div class="field">
		<?php echo $form->textFieldRow($model,'title',array('size'=>80,'maxlength'=>128)); ?>
	</div>

	<div class="field">
		<?php echo $form->textAreaRow($model,'content',array('rows'=>10, 'cols'=>70)); ?>
	</div>

	<div class="field">
		<?php echo $form->dropDownListRow($model,'status',PostLookup::items('PostStatus')); ?>
	</div>
	
        //Here I render a table
	<?php $this->renderPartial('/postmedia/_update', array('model' => $model->medias)); ?>
	
	<div class="actions field">
		<?php $this->widget('bootstrap.widgets.TbButton',array(
                    'buttonType'=>'submit',
                    'type'=>'success',
                    'label'=>$model->isNewRecord ? 'Create' : 'Save',
                    'size'=>'large',
                    //'htmlOptions'=>array('class'=>'btn btn-success btn-medium')
                 )); ?>
	</div>

<?php $this->endWidget(); ?>

Here the partial view (\views\postMedia\_update.php):

<table class="table striped" id="down">
    <tbody class="images"></tbody>

    <?php foreach($model as $photo) : ?>
        <tr class="fade in" style="height: 53px;">
        
            <td class="preview">
                <a href="<?php $photo->url . $photo->filename?>" title="<?php echo $photo->filename; ?>" rel="gallery" download="<?php echo $photo->filename; ?>"></a>
            </td>
            <td class="name">
                <a href="<?php echo Yii::app()->baseUrl . $photo->url . $photo->filename?>" title="<?php echo $photo->filename; ?>" rel="image" download="<?php echo $photo->filename; ?>"><?php echo $photo->filename; ?></a>
            </td>
            <td class="size"><span><?php echo $photo->size; ?></span></td>
            <td class="button">
                  <?php $this->widget('bootstrap.widgets.TbButton',array(
                      'buttonType'=>'ajaxButton',
                      'type'=>'danger',
                      'label'=>'Remove',
                      'size'=>'normal',
                      'icon'=>'icon-trash icon-white',
                      'htmlOptions'=>array(
                          'href'=>Yii::app()->createUrl('/postmedia/ajaxdelete', array('id'=>$photo->id)),
                      ),
                      'ajaxOptions'=>array(
                          'update'=>'#down', 
                          'url'=>Yii::app()->createUrl('/postmedia/ajaxdelete', array('id'=>$photo->id)),
                          'type'=>'POST',
                      ),
                  )); ?>
							
            </td>
        </tr>
    <?php endforeach; ?>
</table>

And here the action (\controllers\PostMediaController.php):

    public function actionAjaxDelete()
	{
	    
	    Yii::log("ANTES 0 id: " .$_GET['post_id'], "info");
		
	    if(Yii::app()->request->isPostRequest && isset($_GET['id']))
		{
			
                    //$media = $this->loadModel($id);	
                    $media = PostMedia::model()->findByPk($_GET['id']);			
                    
                    Yii::log("ANTES 1 media->post_id: " .$media->post_id, "info");
	
                    $medias=new CActiveDataProvider(PostMedia::model(), array(
                        'criteria'=>array(
                            'condition'=>'post_id='.$media->post_id,
                        ),
                    ));

                    //$medias = Post::model()->findByPk($media->post_id);
		    
			foreach($medias as $photo):
			    Yii::log("MEDIA id: " .$photo->id, "info");
				Yii::log("MEDIA url: " .$photo->url, "info");
				Yii::log("MEDIA filename: " .$photo->filename, "info");
				Yii::log("MEDIA post_id: " .$photo->post_id, "info");
			endforeach;
									
                    $this->loadModel($_GET['id'])->delete();
			
                    Yii::log("ANTES 2", "info");
		    			
                    echo $this->renderPartial('_update', array('model'=>$medias), true);
                    return;			
                }
		else
                    throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}

As you can see, I perform an 'echo' with the partial view and the model instance, but the model instance is not well loaded, it seems loaded with garbage, as it returns some empty rows, I see it because it writes this on the log:

2013/03/17 04:53:02 [info] [application] ANTES 0 id: 
2013/03/17 04:53:02 [info] [application] ANTES 1 media->post_id: 21
2013/03/17 04:53:02 [info] [application] MEDIA id: 
2013/03/17 04:53:02 [info] [application] MEDIA url: 
2013/03/17 04:53:02 [info] [application] MEDIA filename: 
2013/03/17 04:53:02 [info] [application] MEDIA post_id: 
2013/03/17 04:53:02 [info] [application] MEDIA id: 
2013/03/17 04:53:02 [info] [application] MEDIA url: 
2013/03/17 04:53:02 [info] [application] MEDIA filename: 
2013/03/17 04:53:02 [info] [application] MEDIA post_id: 
2013/03/17 04:53:02 [info] [application] MEDIA id: 
2013/03/17 04:53:02 [info] [application] MEDIA url: 
2013/03/17 04:53:02 [info] [application] MEDIA filename: 
2013/03/17 04:53:02 [info] [application] MEDIA post_id: 
2013/03/17 04:53:02 [info] [application] ANTES 2

If someone could tell me what I'm doing wrong... It would be really appreciate, I have tried everything and I don't get this simple thing! :S