Localized version of CFormatter Follow @yiiframework

class LocalizedFormatter extends CFormatter
{
    /**
     * Initializes this class.
     */
    public function init()
    {
        switch (Yii::app()->language) {
            case 'nl':
                $this->dateFormat = 'd-m-Y';
                $this->timeFormat = 'H:i:s';
                $this->datetimeFormat = 'd-m-Y H:i:s';
                $this->numberFormat = array(
                    'decimals'=>null,
                    'decimalSeparator'=>',',
                    'thousandSeparator'=>'.'
                );
                $this->booleanFormat = array('Nee', 'Ja');
                break;
            // Add more language cases according to your needs        
        }
    }
}

'components' => array(
    (...)
    'format' => array(
        'class' => 'LocalizedFormatter',
    ),
    (...)
),