silverstripe-cms/code/Reports/BrokenFilesReport.php

<?php

namespace SilverStripe\CMS\Reports;

use SilverStripe\Core\ClassInfo;
use SilverStripe\Forms\CheckboxField;
use SilverStripe\Forms\FieldList;
use SilverStripe\Reports\Report;
use SilverStripe\ORM\DB;
use SilverStripe\Versioned\Versioned;

class BrokenFilesReport extends Report
{

    public function title()
    {
        return _t('SideReport.BROKENFILES', "Pages with broken files");
    }

    public function group()
    {
        return _t('SideReport.BrokenLinksGroupTitle', "Broken links reports");
    }

    public function sourceRecords($params = null)
    {
        // Get class names for page types that are not virtual pages or redirector pages
        $classes = array_diff(
            ClassInfo::subclassesFor('SilverStripe\\CMS\\Model\\SiteTree'),
            ClassInfo::subclassesFor('SilverStripe\\CMS\\Model\\VirtualPage'),
            ClassInfo::subclassesFor('SilverStripe\\CMS\\Model\\RedirectorPage')
        );
        $classParams = DB::placeholders($classes);
        $classFilter = array(
            "\"ClassName\" IN ($classParams) AND \"HasBrokenFile\" = 1" => $classes
        );

        $stage = isset($params['OnLive']) ? 'Live' : 'Stage';
        return Versioned::get_by_stage('SilverStripe\\CMS\\Model\\SiteTree', $stage, $classFilter);
    }

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

    public function getParameterFields()
    {
        return new FieldList(
            new CheckboxField('OnLive', _t('SideReport.ParameterLiveCheckbox', 'Check live site'))
        );
    }
}