Hi team,
Do you know how to add validation to backend, i tried with getEditFrom in ModelAdmin and evene getCMSAction of class DataObject but no success. Thanks

This might help:

http://doc.silverstripe.org/framework/en/topics/form-validation#validation-in-the-cms

Martine

Thanks for your help . I am a newbie in silvertripe so it would be nice if you can answer further like i had already the video module
class VideoAdmin extends ModelAdmin {

private static $managed_models = array('Video');
private static $url_segment = 'video';
private static $menu_title = 'Video';

}

HOw can i add getCMSValidator to validate the video title based on the following DataObject

class Video extends DataObject {

private static $db = array(
'VideoTitle' => 'Varchar(255)',
'VideoDescription' => 'Text',
'OwnerID' => 'Int'
);
}

Please see the below thread...

http://www.silverstripe.org/general-questions/show/17007

Fantastic, you are my life saver. Thank you very much