<?php
use SilverStripe\ORM\ArrayList;
use SilverStripe\ORM\SS_List;
use SilverStripe\Security\Member;
use SilverStripe\Security\Permission;
/**
* Base "abstract" class creating reports on your data.
*
* Creating reports
* ================
*
* Creating a new report is a matter overloading a few key methods
*
* {@link title()}: Return the title - i18n is your responsibility
* {@link description()}: Return the description - i18n is your responsibility
* {@link sourceQuery()}: Return a SS_List of the search results
* {@link columns()}: Return information about the columns in this report.
* {@link parameterFields()}: Return a FieldList of the fields that can be used to filter this
* report.
*
* If you wish to modify the report in more extreme ways, you could overload these methods instead.
*
* {@link getReportField()}: Return a FormField in the place where your report's TableListField
* usually appears.
* {@link getCMSFields()}: Return the FieldList representing the complete right-hand area of the
* report, including the title, description, parameter fields, and results.
*
* Showing reports to the user
* ===========================
*
* Right now, all subclasses of SS_Report will be shown in the ReportAdmin. In SS3 there is only
* one place where reports can go, so this class is greatly simplifed from its version in SS2.
*
* @package reports
*/
class SS_Report extends ViewableData
{
/**
* This is the title of the report,
* used by the ReportAdmin templates.
*
* @var string
*/
protected $title = '';
/**
* This is a description about what this
* report does. Used by the ReportAdmin
* templates.
*
* @var string
*/
protected $description = '';
/**
* The class of object being managed by this report.
* Set by overriding in your subclass.
*/
protected $dataClass = 'SiteTree';
/**
* A field that specifies the sort order of this report
* @var int
*/
protected $sort = 0;
/**
* Reports which should not be collected and returned in get_reports
* @var array
*/
public static $excluded_reports = array(
'SS_Report',
'SS_ReportWrapper',
'SideReportWrapper',
'SideReport_RecentlyEdited', // @deprecated 3.2..4.0
'SideReport_EmptyPages', // @deprecated 3.2..4.0
'SideReport_BrokenVirtualPages', // @deprecated 3.2..4.0
'SideReport_BrokenRedirectorPages', // @deprecated 3.2..4.0
'SideReport_BrokenLinks', // @deprecated 3.2..4.0
'SideReport_BrokenFiles' // @deprecated 3.2..4.0
);
/**
* Return the title of this report.
*
* You have two ways of specifying the description:
* - overriding description(), which lets you support i18n
* - defining the $description property
*/
public function title()
{
return $this->title;
}
/**
* Allows access to title as a property
*
* @return string
*/
public function getTitle()
{
return $this->title();
}
/**
* Return the description of this report.
*
* You have two ways of specifying the description:
* - overriding description(), which lets you support i18n
* - defining the $description property
*/
public function description()
{
return $this->description;
}
/**
* Return the {@link SQLQuery} that provides your report data.
*/
public function sourceQuery($params)
{
if ($this->hasMethod('sourceRecords')) {
return $this->sourceRecords($params, null, null)->dataQuery();
} else {
user_error("Please override sourceQuery()/sourceRecords() and columns() or, if necessary, override getReportField()", E_USER_ERROR);
}
}
/**
* Return a SS_List records for this report.
*/
public function records($params)
{
if ($this->hasMethod('sourceRecords')) {
return $this->sourceRecords($params, null, null);
} else {
$query = $this->sourceQuery();
$results = new ArrayList();
foreach ($query->execute() as $data) {
$class = $this->dataClass();
$result = new $class($data);
$results->push($result);
}
return $results;
}
}
/**
* Return the data class for this report
*/
public function dataClass()
{
return $this->dataClass;
}
public function getLink($action = null)
{
return Controller::join_links(
ReportAdmin::singleton()->Link('show'),
get_class($this),
$action
);
}
/**
* counts the number of objects returned
* @param Array $params - any parameters for the sourceRecords
* @return Int
*/
public function getCount($params = array())
{
$sourceRecords = $this->sourceRecords($params, null, null);
if (!$sourceRecords instanceof SS_List) {
user_error($this->class."::sourceRecords does not return an SS_List", E_USER_NOTICE);
return "-1";
}
return $sourceRecords->count();
}
/**
* Exclude certain reports classes from the list of Reports in the CMS
* @param $reportClass Can be either a string with the report classname or an array of reports classnames
*/
public static function add_excluded_reports($reportClass)
{
if (is_array($reportClass)) {
self::$excluded_reports = array_merge(self::$excluded_reports, $reportClass);
} else {
if (is_string($reportClass)) {
//add to the excluded reports, so this report doesn't get used
self::$excluded_reports[] = $reportClass;
}
}
}
/**
* Return an array of excluded reports. That is, reports that will not be included in
* the list of reports in report admin in the CMS.
* @return array
*/
public static function get_excluded_reports()
{
return self::$excluded_reports;
}
/**
* Return the SS_Report objects making up the given list.
* @return Array of SS_Report objects
*/
public static function get_reports()
{
$reports = ClassInfo::subclassesFor(get_called_class());
$reportsArray = array();
if ($reports && count($reports) > 0) {
//collect reports into array with an attribute for 'sort'
foreach ($reports as $report) {
if (in_array($report, self::$excluded_reports)) {
continue;
} //don't use the SS_Report superclass
$reflectionClass = new ReflectionClass($report);
if ($reflectionClass->isAbstract()) {
continue;
} //don't use abstract classes
$reportObj = new $report;
if (method_exists($reportObj, 'sort')) {
$reportObj->sort = $reportObj->sort();
} //use the sort method to specify the sort field
$reportsArray[$report] = $reportObj;
}
}
uasort($reportsArray, function ($a, $b) {
if ($a->sort == $b->sort) {
return 0;
} else {
return ($a->sort < $b->sort) ? -1 : 1;
}
});
return $reportsArray;
}
/////////////////////// UI METHODS ///////////////////////
/**
* Returns a FieldList with which to create the CMS editing form.
* You can use the extend() method of FieldList to create customised forms for your other
* data objects.
*
* @uses getReportField() to render a table, or similar field for the report. This
* method should be defined on the SS_Report subclasses.
*
* @return FieldList
*/
public function getCMSFields()
{
$fields = new FieldList();
if ($description = $this->description()) {
$fields->push(new LiteralField('ReportDescription', "<p>" . $description . "</p>"));
}
// Add search fields is available
if ($this->hasMethod('parameterFields') && $parameterFields = $this->parameterFields()) {
foreach ($parameterFields as $field) {
// Namespace fields for easier handling in form submissions
$field->setName(sprintf('filters[%s]', $field->getName()));
$field->addExtraClass('no-change-track'); // ignore in changetracker
$fields->push($field);
}
// Add a search button
$fields->push(new FormAction('updatereport', _t('GridField.Filter')));
}
$fields->push($this->getReportField());
$this->extend('updateCMSFields', $fields);
return $fields;
}
public function getCMSActions()
{
// getCMSActions() can be extended with updateCMSActions() on a extension
$actions = new FieldList();
$this->extend('updateCMSActions', $actions);
return $actions;
}
/**
* Return a field, such as a {@link GridField} that is
* used to show and manipulate data relating to this report.
*
* Generally, you should override {@link columns()} and {@link records()} to make your report,
* but if they aren't sufficiently flexible, then you can override this method.
*
* @return FormField subclass
*/
public function getReportField()
{
// TODO Remove coupling with global state
$params = isset($_REQUEST['filters']) ? $_REQUEST['filters'] : array();
$items = $this->sourceRecords($params, null, null);
$gridFieldConfig = GridFieldConfig::create()->addComponents(
new GridFieldButtonRow('before'),
new GridFieldPrintButton('buttons-before-left'),
new GridFieldExportButton('buttons-before-left'),
new GridFieldToolbarHeader(),
new GridFieldSortableHeader(),
new GridFieldDataColumns(),
new GridFieldPaginator()
);
$gridField = new GridField('Report', null, $items, $gridFieldConfig);
$columns = $gridField->getConfig()->getComponentByType('GridFieldDataColumns');
$displayFields = array();
$fieldCasting = array();
$fieldFormatting = array();
// Parse the column information
foreach ($this->columns() as $source => $info) {
if (is_string($info)) {
$info = array('title' => $info);
}
if (isset($info['formatting'])) {
$fieldFormatting[$source] = $info['formatting'];
}
if (isset($info['csvFormatting'])) {
$csvFieldFormatting[$source] = $info['csvFormatting'];
}
if (isset($info['casting'])) {
$fieldCasting[$source] = $info['casting'];
}
if (isset($info['link']) && $info['link']) {
$fieldFormatting[$source] = function($value, $item) {
/** @var CMSPreviewable $item */
return sprintf(
'<a class="grid-field__link-block" href="%s">%s</a>',
Convert::raw2att($item->CMSEditLink()),
Convert::raw2xml($value)
);
};
}
$displayFields[$source] = isset($info['title']) ? $info['title'] : $source;
}
$columns->setDisplayFields($displayFields);
$columns->setFieldCasting($fieldCasting);
$columns->setFieldFormatting($fieldFormatting);
return $gridField;
}
/**
* @param Member $member
* @return boolean
*/
public function canView($member = null)
{
if (!$member && $member !== false) {
$member = Member::currentUser();
}
$extended = $this->extendedCan('canView', $member);
if ($extended !== null) {
return $extended;
}
if ($member && Permission::checkMember($member, array('CMS_ACCESS_LeftAndMain', 'CMS_ACCESS_ReportAdmin'))) {
return true;
}
return false;
}
/**
* Helper to assist with permission extension
*
* {@see DataObject::extendedCan()}
*
* @param string $methodName Method on the same object, e.g. {@link canEdit()}
* @param Member|int $member
* @return boolean|null
*/
public function extendedCan($methodName, $member)
{
$results = $this->extend($methodName, $member);
if ($results && is_array($results)) {
// Remove NULLs
$results = array_filter($results, function ($v) {return !is_null($v);});
// If there are any non-NULL responses, then return the lowest one of them.
// If any explicitly deny the permission, then we don't get access
if ($results) {
return min($results);
}
}
return null;
}
/**
* Return the name of this report, which
* is used by the templates to render the
* name of the report in the report tree,
* the left hand pane inside ReportAdmin.
*
* @return string
*/
public function TreeTitle()
{
return $this->title();
}
}
/**
* SS_ReportWrapper is a base class for creating report wappers.
*
* Wrappers encapsulate an existing report to alter their behaviour - they are implementations of
* the standard GoF decorator pattern.
*
* This base class ensure that, by default, wrappers behave in the same way as the report that is
* being wrapped. You should override any methods that need to behave differently in your subclass
* of SS_ReportWrapper.
*
* It also makes calls to 2 empty methods that you can override {@link beforeQuery()} and
* {@link afterQuery()}
*
* @package reports
*/
abstract class SS_ReportWrapper extends SS_Report
{
protected $baseReport;
public function __construct($baseReport)
{
$this->baseReport = is_string($baseReport) ? new $baseReport : $baseReport;
$this->dataClass = $this->baseReport->dataClass();
parent::__construct();
}
public function ID()
{
return get_class($this->baseReport) . '_' . get_class($this);
}
///////////////////////////////////////////////////////////////////////////////////////////
// Filtering
public function parameterFields()
{
return $this->baseReport->parameterFields();
}
///////////////////////////////////////////////////////////////////////////////////////////
// Columns
public function columns()
{
return $this->baseReport->columns();
}
///////////////////////////////////////////////////////////////////////////////////////////
// Querying
/**
* Override this method to perform some actions prior to querying.
*/
public function beforeQuery($params)
{
}
/**
* Override this method to perform some actions after querying.
*/
public function afterQuery()
{
}
public function sourceQuery($params)
{
if ($this->baseReport->hasMethod('sourceRecords')) {
// The default implementation will create a fake query from our sourceRecords() method
return parent::sourceQuery($params);
} elseif ($this->baseReport->hasMethod('sourceQuery')) {
$this->beforeQuery($params);
$query = $this->baseReport->sourceQuery($params);
$this->afterQuery();
return $query;
} else {
user_error("Please override sourceQuery()/sourceRecords() and columns() in your base report", E_USER_ERROR);
}
}
public function sourceRecords($params = array(), $sort = null, $limit = null)
{
$this->beforeQuery($params);
$records = $this->baseReport->sourceRecords($params, $sort, $limit);
$this->afterQuery();
return $records;
}
///////////////////////////////////////////////////////////////////////////////////////////
// Pass-through
public function title()
{
return $this->baseReport->title();
}
public function group()
{
/** @skipUpgrade */
return $this->baseReport->hasMethod('group') ? $this->baseReport->group() : 'Group';
}
public function sort()
{
return $this->baseReport->hasMethod('sort') ? $this->baseReport->sort() : 0;
}
public function description()
{
return $this->baseReport->description();
}
public function canView($member = null)
{
return $this->baseReport->canView($member);
}
}