How to get Silverstripe TableField to save records - php

Question

I'm trying to use TableField to manage a list of related links to a page. I have the control working, except it isn't saving the id to the db (a hidden field), just the title and url
Is this the right way to be using it? think so. I've been using this: http://doc.silverstripe.org/sapphire/en/reference/tablefield as a guide
some code:
static $has_many = array (
'Linketys' => 'Linkety',
);
$myTableField = new TableField(
'MyTableField', // fieldName
'Linkety', // sourceType
array(
'Title'=>'Title',
'URL'=>'URL'
), // fieldList
array(
'Title'=>'TextField',
'URL'=>'TextField'
), // fieldTypes
null, // filterField (legacy)
"Linkety.PageID",
$this->ID
);
// add some HiddenFields thats saved with each new row
$myTableField->setExtraData(array(
'PageID' => $this->ID ? $this->ID : '$RecordID'
));
$fields->addFieldToTab("Root.Content.Options", $myTableField);

Answer 1

Hmm, the documentation seems to be a bit off.
This is how I use table fields, not using extraData
Linkety.php
class Linkety extends DataObject {
public static $db = array(
'Title'=>'Varchar',
'URLSegment'=>'Varchar',
);
public static $has_one = array(
'Page' => 'Page'
);
}
In Page.php
$myTableField = new TableField(
'Linkety',
'Linkety',
array('Title'=>'Link title', 'URLSegment'=>'URL'),
array('Title'=>'TextField','URLSegment'=>'TextField'),
'PageID',
$this->ID,
$editExisting=true
);
$fields->addFieldToTab("Root.Content.Options", $myTableField);