silverstripe-contentreview/code/models/ContentReviewLog.php

<?php

class ContentReviewLog extends DataObject {
	
	/**
	 *
	 * @var array
	 */
	private static $db = array(
		'Note' => 'Text'
	);
	
	/**
	 *
	 * @var array
	 */
	private static $has_one = array(
		'Reviewer' => 'Member',
		'SiteTree' => 'SiteTree'
	);
	
	/**
	 *
	 * @var array
	 */
	private static $summary_fields = array(
		'Note' => array('title' => 'Note'),
		'Created' => array('title' => 'Reviewed at'),
		'Reviewer.Title' => array('title' => 'Reviewed by')
	);
	
	/**
	 *
	 * @var string
	 */
	private static $default_sort = 'Created DESC';
	
	/**
	 * 
	 * @return bool
	 */
	public function canView($member = null) {
		return (bool)Member::currentUser();
	}
}