Cjuidialog And Validation

Hello,

I am using a CJUIDialog for create Absence since a grid view.
I would like to use validation as usual _form.

My CJuiDialog :

        
<?php
$this->beginWidget('zii.widgets.jui.CJuiDialog', array(// the dialog
    'id' => 'dialogAbsence',
    'options' => array(
        'title' => Yii::t('view', 'creerAbsenceDfc'),
        'autoOpen' => false,
        'modal' => true,
        'width' => 700,
        'height' => 440,
    ),
));
?>
<div class="form">
    <div class="divForForm">
        <?php
        $formAbsence = $this->beginWidget('bootstrap.widgets.TbActiveForm', array(
            'id' => 'dfc-form-absence',
            'type' => 'horizontal',
            'enableAjaxValidation' => false,
            'enableClientValidation' => true,
            'clientOptions' => array('validateOnSubmit' => true),
                ));
        ?>
<?php echo $formAbsence->errorSummary($modelAbsence); ?>
        <div style="float:left;width:50%">
            <div>
                <?php
                $modelAbsence->fk_planning_id = $modelPlanning->planning_id;
                echo $formAbsence->hiddenField($modelAbsence, 'fk_planning_id');
                echo $formAbsence->hiddenField($modelAbsence, 'fk_mesure_id', array('id' => 'mesureId'));
                ?>
            </div>
            <div>
                    <?php echo CHtml::label(Yii::t('model', 'fkCodeTypeAbsence'), 'fk_code_type_absence', array()); ?>
                <div>          
                    <?php
                    echo $formAbsence->RadioButtonList($modelAbsence, 'fk_code_type_absence', $listAbsences, array('class' => 'ckTypeAbsence', 'tabindex' => 1,));
                    ?>
                </div>
<?php //echo $formAbsence->error($formAbsence, 'fk_code_type_absence');  ?>
            </div>
            <div class="control-group" id="tfHeure" style="display:none">
<?php echo CHtml::label('heure', 'heure_debut', array()); ?>
                <div>
                    <div class="input-prepend">
                        <?php
                        echo $formAbsence->TextField($modelAbsence, 'heure_debut', array('class' => 'input-mesure', 'tabindex' => 2,));
                        ?>
                    </div>
                </div>
            </div>
            <div class="control-group" id="ddlMotifAbsence" style="display:none">
<?php echo CHtml::label(Yii::t('model', 'fkCodeMotifAbsence'), 'fk_code_motif_absence'); ?>
                <div>
                    <div class="input-prepend">
                        <?php
                        echo $formAbsence->DropDownList($modelAbsence, 'fk_code_motif_absence', $listTypeAbsences, array('prompt' => Yii::t('view', '[tousConcernes]'), 'tabindex' => 3));
                        ?>
                    </div>

                </div>
            </div>
        </div>
        <div class="control-group" style="float:left"> 
                <?php echo CHtml::label(Yii::t('model', 'fkCodePeriodeAbsence'), 'fk_code_periode_absence', array('style' => 'control-label')); ?>
            <div>          
                <?php
                echo $formAbsence->RadioButtonList($modelAbsence, 'fk_code_periode_absence', $listPeriodeAbsences, array('class' => 'ckPeriodAbsence', 'tabindex' => 5,));
                ?>
            </div>
<?php // echo $formAbsence->error($formAbsence, 'fk_code_periode_absence');  ?>
        </div>      
        <div style="clear:both"></div>
        <div class="form-actions">
            <?php
            $this->widget('bootstrap.widgets.TbButton', array('size' => 'small',
                'label' => Yii::t('view', 'boutonCrer'),
                'buttonType' => 'ajaxButton',
                'htmlOptions' => array('tabindex' => 41),
                'url' => Controller::createUrl('/demAbsence/createAbsenceDFC'),
                'ajaxOptions' => array(
                    'type' => 'POST',
                    'dataType' => 'json',
                    'data' => 'js:$("#dfc-form-absence").serialize()',
                    'success' => "function(data) { 
                          $.fn.yiiGridView.update('dfc-presence-grid', {data: $(this).serialize() });
                          $(this).close();
                }"
                ),));
            ?>
        </div>
<?php $this->endWidget(); ?>
    </div>
</div>

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

my gridview :

        array(
            'class' => 'bootstrap.widgets.TbButtonColumn',
            'template' => '{update}',
            'buttons' => array(
                'update' => array(
                    'icon' => 'tasks',
                    'url' => '$data->fkMesureForm->fk_mesure_id',
                    'label' => Yii::t('view', 'saisirAbsence'),
                    'visible' => '(Yii::app()->user->checkAccess("demAbsence.createAbsence") 
                        &&  Yii::app()->getController()->getAction()->getId() == "saisirPresence")? true : false',
                    'click' => 'function(){ $(\'#dialogAbsence\').dialog(\'open\');
                       $("#mesureId").val($(this).attr("href")); 
                        return false;}',
                ),
            ),
        ),

the controller :

    /**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreateAbsenceDFC() {
        $modelAbsence=new DemAbsence;
        
        if(isset($_POST['DemAbsence']))
        {
           $modelAbsence->attributes=$_POST['DemAbsence'];
           $modelPlanning = DfcPlanning::model()->findByPk($modelAbsence->fk_planning_id);
           $modelAbsence->jour_debut = $modelPlanning->jour;
           //$this->performAjaxValidation($modelAbsence);
            if($modelAbsence->save())
            {
                    echo CJSON::encode(array(
                        'status'=>'success', 
                        'div'=>"absenceAjoutee"
                        ));
                    exit;               
             }else{
                 echo CJSON::encode(array(
                        '$modelAbsence'=>$modelAbsence, 
                        //'div'=>"absenceAjoutee"
                        ));
                    exit;  
             }
        }
     }

I think I have to pass the model with erroe trough CJSON, but how can I do ?

Nath