Datepicker in Yii is storing data as yy MM d format

Try this:

protected function afterFind(){
    parent::afterFind();
    $this->due_date=date('d F, Y', strtotime(str_replace("-", "", $this->due_date)));       
}

protected function beforeSave(){
    if(parent::beforeSave()){
        $this->due_date=date('Y-m-d', strtotime(str_replace(",", "", $this->due_date)));
        return TRUE;
    }
    else return false;
}

Add the above code to your model. And it should work.

I had a similar problem with european dates, formatted like: 'dd/mm/yyyy', and this is what i use:

In model rules:

    public function rules()
{
    // NOTE: you should only define rules for those attributes that
    // will receive user inputs.
    return array(
        array('date','date','format'=>Yii::app()->locale->getDateFormat('medium')),

because 'medium' locale format fits my validation needs.

In the form I use:

            <?php echo $form->labelEx($model,'date'); ?>
            <?php
            $this->widget('zii.widgets.jui.CJuiDatePicker', array(
                //'name'=>'date',
                'model'=>$model,
                'attribute'=>'date',
                'language'=>Yii::app()->language=='es' ? 'es' : null,
                'options'=>array(
                    'changeMonth'=>'true', 
                    'changeYear'=>'true',   
                    'yearRange' => '-99:+2',        
                    'showAnim'=>'fold', // 'show' (the default), 'slideDown', 'fadeIn', 'fold'
                    'showOn'=>'button', // 'focus', 'button', 'both'
                    'dateFormat'=>'dd/mm/yy',
                    'value'=>date('dd/mm/yy'),
                    'theme'=>'redmond',
                    'buttonText'=>Yii::t('ui','Select form calendar'), 
                    'buttonImage'=>Yii::app()->request->baseUrl.'/images/calendar.gif', 
                    'buttonImageOnly'=>true,
                ),
                'htmlOptions'=>array(
                    'style'=>'vertical-align:top',
                    'class'=>'span2',
                ),  
            ));?>
            <?php echo $form->error($model,'date'); ?>

And the conversion back to MySQL format, for save, date comparisons...:

$date=strftime('%Y-%m-%d', strtotime(str_replace("/", "-", $this->date)));

Hope this helps.