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Data Model Questions

siteConfig DataExtension not saving, no default values


2 Posts   346 Views


22 December 2013 at 3:59am (Last edited: 22 December 2013 4:00am), Community Member, 16 Posts

Hi, I am trying to extend DataExtension, but the default values are not being displayed and any values are not being saved to the DB.


class AnalyticsConfig extends DataExtension {

private static $db = array(
'redisIP' => 'varchar(250)',
'redisPort' => 'varchar(250)',
'redisSize' => 'varchar(250)',

public static $defaults = array(
'redisIP' => '',
'redisPort' => '6379',
'redisSize' => '4832',

public function updateCMSFields(FieldList $fields) {
$fields->addFieldToTab("Root.Main", new TextField("RedisIP", "Redis IP"));
$fields->addFieldToTab("Root.Main", new TextField("RedisPort", "Redis Port"));
$fields->addFieldToTab("Root.Main", new TextField("RedisSize", "Redis Size"));


also, in _config.php i added

Object::add_extension('SiteConfig', 'AnalyticsConfig');

Any ideas?


24 December 2013 at 12:16am Forum Moderator, 1796 Posts


Please see

Alternatively if you are not using 3.1 then look for older documentation. Also look at several small modules as these often have great examples of exending the silverstripe datamodel