public function getCMSFields() { $fields = parent::getCMSFields(); $lastEditedDateField = new DateTimeField('OriginalCreated'); $lastEditedDateField->setConfig('showcalendar', true); $fields->addFieldToTab('Root.Main', $lastEditedDateField, 'Content'); $fields->addFieldToTab('Root.Original', new LiteralField('OriginalTweet', str_replace("\n", '<br>', print_r($this->OriginalTweet, 1)))); return $fields; }