SilverStripe更改父类的字段标签

Question

Within SiteConfig there is a TextField Site title. I'm trying to change the label of this textfield $titleField through a SiteConfig extension in class SiteConfigExtension extends DataExtension.

Here is the code from siteconfig/code/model/ where it's created:

$fields = new FieldList(
    new TabSet("Root",
        $tabMain = new Tab('Main',
            $titleField = new TextField("Title", _t('SiteConfig.SITETITLE', "Site title")),
                ....

Q: What's the easiest way to replace the SiteTitle label without having to remove the field in the SiteConfig extension and re-add it again with the desired label?

Answer 1

Updating the title from SiteConfigExtension uses updateCMSFields...

class SiteConfigExtension extends DataExtension {

    public function updateCMSFields(FieldList $fields) {
        if ($titleField = $fields->dataFieldByName('Title'))
            $titleField->setTitle('my title');
    }

}