silverstripe-contentreview/code/PagesDueForReviewReport.php

<?php
require_once 'Zend/Date.php';

/**
 * Show all pages that need to be reviewed
 *
 * @package contentreview
 */
class PagesDueForReviewReport extends SS_Report {
	function title() {
		return _t('PagesDueForReviewReport.TITLE', 'Pages due for review');
	}

	function parameterFields() {
		$params = new FieldSet();

		// We need to be a bit fancier when subsites is enabled
		if(class_exists('Subsite') && $subsites = DataObject::get('Subsite')) {
			// javascript for subsite specific owner dropdown
			Requirements::javascript('contentreview/javascript/PagesDueForReviewReport.js');

			// Remember current subsite
			$existingSubsite = Subsite::currentSubsiteID();

			$map = array();

			// Create a map of all potential owners from all applicable sites
			$sites = Subsite::accessible_sites('CMS_ACCESS_CMSMain');
			foreach($sites as $site) {
				Subsite::changeSubsite($site);

				$cmsUsers = Permission::get_members_by_permission(array("CMS_ACCESS_CMSMain", "ADMIN"));
				// Key-preserving merge
				foreach($cmsUsers->toDropdownMap('ID', 'Title') as $k => $v) {
					$map[$k] = $v;
				}
			}

			$map = $map + array('' => 'Any', '-1' => '(no owner)');

			$params->push(new DropdownField("OwnerID", 'Page owner', $map));

			// Restore current subsite
			Subsite::changeSubsite($existingSubsite);
		} else {
			$cmsUsers = Permission::get_members_by_permission(array("CMS_ACCESS_CMSMain", "ADMIN"));
			$map = $cmsUsers->map('ID', 'Title', '(no owner)');
			unset($map['']);
			$map = array('' => 'Any', '-1' => '(no owner)') + $map;
			$params->push(new DropdownField("OwnerID", 'Page owner', $map));
		}

		$params->push($startDate = new CalendarDateField('ReviewDateAfter', 'Review date after or on (DD/MM/YYYY)'));
		$params->push($endDate = new CalendarDateField('ReviewDateBefore', 'Review date before or on (DD/MM/YYYY)', date('d/m/Y', strtotime('midnight'))));
		$endDate->mustBeAfter($startDate->Name());
		$startDate->mustBeBefore($endDate->Name());

		$params->push(new CheckboxField('ShowVirtualPages', 'Show Virtual Pages'));

		return $params;
	}

	function columns() {
		$fields = array(
			'Title' => array(
				'title' => 'Page name',
				'formatting' => '<a href=\"admin/show/$ID\" title=\"Edit page\">$value</a>'
			),
			'NextReviewDate' => array(
				'title' => 'Review Date',
				'casting' => 'Date->Full'
			),
			'OwnerNames' => array(
				'title' => 'Owner'
			),
			'LastEditedByName' => 'Last edited by',
			'AbsoluteLink' => array(
				'title' => 'URL',
				'formatting' => '$value " . ($AbsoluteLiveLink ? "<a target=\"_blank\" href=\"$AbsoluteLiveLink\">(live)</a>" : "") . " <a target=\"_blank\" href=\"$value?stage=Stage\">(draft)</a>'
			)
		);

		return $fields;
	}

	function sourceRecords($params, $sort, $limit) {
		$wheres = array();

		if(empty($params['ReviewDateBefore']) && empty($params['ReviewDateAfter'])) {
			// If there's no review dates set, default to all pages due for review now
			$reviewDate = new Zend_Date(SS_Datetime::now()->getValue());
			$reviewDate->add(1, Zend_Date::DAY);
			$wheres[] = sprintf('"NextReviewDate" < \'%s\'', $reviewDate->toString('YYYY-MM-dd'));
		} else {
			// Review date before
			if(!empty($params['ReviewDateBefore'])) {
				list($day, $month, $year) = explode('/', $params['ReviewDateBefore']);
				$reviewDate = new Zend_Date("$year-$month-$day");
				$reviewDate->add(1, Zend_Date::DAY);
				$wheres[] = sprintf('"NextReviewDate" < \'%s\'', $reviewDate->toString('YYYY-MM-dd'));
			}

			// Review date after
			if(!empty($params['ReviewDateAfter'])) {
				list($day, $month, $year) = explode('/', $params['ReviewDateAfter']);
				$reviewDate = new Zend_Date("$year-$month-$day");
				$wheres[] = sprintf('"NextReviewDate" >= \'%s\'', $reviewDate->toString('YYYY-MM-dd'));
			}
		}

		// Show virtual pages?
		if(empty($params['ShowVirtualPages'])) {
			$virtualPageClasses = ClassInfo::subclassesFor('VirtualPage');
			$wheres[] = sprintf(
				'"SiteTree"."ClassName" NOT IN (\'%s\')',
				implode("','", array_values($virtualPageClasses))
			);
		}

		// We use different dropdown depending on the subsite
		$ownerIdParam = 'OwnerID';

		// Owner dropdown
		if(!empty($params[$ownerIdParam])) {
			$ownerID = (int)$params[$ownerIdParam];
			// We use -1 here to distinguish between No Owner and Any
			if($ownerID == -1) $ownerID = 0;
			$wheres[] = '"OwnerID" = ' . $ownerID;
		}

		$query = singleton("SiteTree")->extendedSQL(join(' AND ', $wheres));

		// Turn a query into records
		if($sort) {
			$parts = explode(' ', $sort);
			$field = $parts[0];
			$direction = $parts[1];

			if($field == 'AbsoluteLink') {
				$sort = '"URLSegment" ' . $direction;
			} elseif($field == 'Subsite.Title') {
				$query->from[] = 'LEFT JOIN "Subsite" ON "Subsite"."ID" = "SiteTree"."SubsiteID"';
			}

			if($field != "LastEditedByName") {
				$query->orderby = $sort;
			}
		}

		$records = singleton('SiteTree')->buildDataObjectSet($query->execute(), 'DataObjectSet', $query);

		if($records) {

			if($sort && $field != "LastEditedByName") $records->sort($sort);

			// Apply limit after that filtering.
			if($limit) return $records->getRange($limit['start'], $limit['limit']);
			else return $records;
		}
	}
}