I have a dual language website,
and I have added various extra Text fields to my Page class, specific to the website I'm making.
However, I want these extra fields to be non-translatable, so I want them to have identical content for both languages, and not have to update the field in both languages if something changes.

How can I do this?
By default, it translates everything I add to a class...

Thanks in advance.

Sorry, thats not possible with the current database row setup. A quick workaround is to create a custom getter, and always retrieve the main translation value.

function getMyUntranslatedField() {
$t = $this->getTranslation('en_US');
return $t ? $t->getField('MyUntranslatedField') : null;
}

function getCMSFields() {
$fields = parent::getCMSFields();
// avoid the field being edited on translations
if($this->Locale != 'en_US') $fields->fieldByName('MyUntranslatedField')->makeReadonly();
return $fields;
}

I know its a big limitation of the datamodel, it was a tradeoff...
I'm looking for help adding this "field exclusion" mechanism to the core if you're keen.