silverstripe-cms/code/Reports/EmptyPagesReport.php

<?php

namespace SilverStripe\CMS\Reports;

use SilverStripe\CMS\Model\SiteTree;
use SilverStripe\Reports\Report;

class EmptyPagesReport extends Report
{

    public function title()
    {
        return _t('SideReport.EMPTYPAGES', "Pages with no content");
    }

    public function group()
    {
        return _t('SideReport.ContentGroupTitle', "Content reports");
    }

    public function sort()
    {
        return 100;
    }

    public function sourceRecords($params = null)
    {
        return SiteTree::get()->where(
            "\"ClassName\" != 'RedirectorPage' AND (\"Content\" = '' OR \"Content\" IS NULL OR \"Content\" LIKE '<p></p>' OR \"Content\" LIKE '<p>&nbsp;</p>')"
        )->sort('Title');
    }

    public function columns()
    {
        return array(
            "Title" => array(
                "title" => "Title", // todo: use NestedTitle(2)
                "link" => true,
            ),
        );
    }
}