silverstripe-cms/code/Tasks/RemoveOrphanedPagesTask.php

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<?php
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namespace SilverStripe\CMS\Tasks;
use SilverStripe\CMS\Model\SiteTree;
use SilverStripe\Control\Controller;
use SilverStripe\Forms\CheckboxSetField;
use SilverStripe\Forms\FieldList;
use SilverStripe\Forms\Form;
use SilverStripe\Forms\FormAction;
use SilverStripe\Forms\HeaderField;
use SilverStripe\Forms\LiteralField;
use SilverStripe\Forms\OptionsetField;
use SilverStripe\ORM\ArrayList;
use SilverStripe\ORM\DataObject;
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use SilverStripe\ORM\SS_List;
use SilverStripe\ORM\Versioning\Versioned;
use SilverStripe\Security\Permission;
use SilverStripe\Security\Security;
use SilverStripe\View\Requirements;
/**
* Identify "orphaned" pages which point to a parent
* that no longer exists in a specific stage.
* Shows the pages to an administrator, who can then
* decide which pages to remove by ticking a checkbox
* and manually executing the removal.
*
* Caution: Pages also count as orphans if they don't
* have parents in this stage, even if the parent has a representation
* in the other stage:
* - A live child is orphaned if its parent was deleted from live, but still exists on stage
* - A stage child is orphaned if its parent was deleted from stage, but still exists on live
*
* See {@link RemoveOrphanedPagesTaskTest} for an example sitetree
* before and after orphan removal.
*
* @author Ingo Schommer (<firstname>@silverstripe.com), SilverStripe Ltd.
*/
class RemoveOrphanedPagesTask extends Controller {
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private static $allowed_actions = array(
'index' => 'ADMIN',
'Form' => 'ADMIN',
'run' => 'ADMIN',
'handleAction' => 'ADMIN',
);
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protected $title = 'Removed orphaned pages without existing parents from both stage and live';
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protected $description = "
<p>
Identify 'orphaned' pages which point to a parent
that no longer exists in a specific stage.
</p>
<p>
Caution: Pages also count as orphans if they don't
have parents in this stage, even if the parent has a representation
in the other stage:<br />
- A live child is orphaned if its parent was deleted from live, but still exists on stage<br />
- A stage child is orphaned if its parent was deleted from stage, but still exists on live
</p>
";
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protected $orphanedSearchClass = 'SilverStripe\\CMS\\Model\\SiteTree';
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protected function init() {
parent::init();
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if(!Permission::check('ADMIN')) {
Security::permissionFailure($this);
}
}
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public function Link($action = null)
{
/** @skipUpgrade */
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return Controller::join_links('RemoveOrphanedPagesTask', $action, '/');
}
public function index() {
Requirements::javascript('http://code.jquery.com/jquery-1.7.2.min.js');
Requirements::customCSS('#OrphanIDs .middleColumn {width: auto;}');
Requirements::customCSS('#OrphanIDs label {display: inline;}');
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return $this->renderWith('BlankPage');
}
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public function Form() {
$fields = new FieldList();
$source = array();
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$fields->push(new HeaderField(
'Header',
_t('RemoveOrphanedPagesTask.HEADER', 'Remove all orphaned pages task')
));
$fields->push(new LiteralField(
'Description',
$this->description
));
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$orphans = $this->getOrphanedPages($this->orphanedSearchClass);
if($orphans) foreach($orphans as $orphan) {
/** @var SiteTree $latestVersion */
$latestVersion = Versioned::get_latest_version($this->orphanedSearchClass, $orphan->ID);
$latestAuthor = DataObject::get_by_id('SilverStripe\\Security\\Member', $latestVersion->AuthorID);
$orphanBaseTable = DataObject::getSchema()->baseDataTable($this->orphanedSearchClass);
$liveRecord = Versioned::get_one_by_stage(
$this->orphanedSearchClass,
'Live',
array("\"$orphanBaseTable\".\"ID\"" => $orphan->ID)
);
$label = sprintf(
'<a href="admin/pages/edit/show/%d">%s</a> <small>(#%d, Last Modified Date: %s, Last Modifier: %s, %s)</small>',
$orphan->ID,
$orphan->Title,
$orphan->ID,
$orphan->dbObject('LastEdited')->Nice(),
($latestAuthor) ? $latestAuthor->Title : 'unknown',
($liveRecord) ? 'is published' : 'not published'
);
$source[$orphan->ID] = $label;
}
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if($orphans && $orphans->count()) {
$fields->push(new CheckboxSetField('OrphanIDs', false, $source));
$fields->push(new LiteralField(
'SelectAllLiteral',
sprintf(
'<p><a href="#" onclick="javascript:jQuery(\'#Form_Form_OrphanIDs :checkbox\').attr(\'checked\', \'checked\'); return false;">%s</a>&nbsp;',
_t('RemoveOrphanedPagesTask.SELECTALL', 'select all')
)
));
$fields->push(new LiteralField(
'UnselectAllLiteral',
sprintf(
'<a href="#" onclick="javascript:jQuery(\'#Form_Form_OrphanIDs :checkbox\').attr(\'checked\', \'\'); return false;">%s</a></p>',
_t('RemoveOrphanedPagesTask.UNSELECTALL', 'unselect all')
)
));
$fields->push(new OptionsetField(
'OrphanOperation',
_t('RemoveOrphanedPagesTask.CHOOSEOPERATION', 'Choose operation:'),
array(
'rebase' => _t(
'RemoveOrphanedPagesTask.OPERATION_REBASE',
sprintf(
'Rebase selected to a new holder page "%s" and unpublish. None of these pages will show up for website visitors.',
$this->rebaseHolderTitle()
)
),
'remove' => _t('RemoveOrphanedPagesTask.OPERATION_REMOVE', 'Remove selected from all stages (WARNING: Will destroy all selected pages from both stage and live)'),
),
'rebase'
));
$fields->push(new LiteralField(
'Warning',
sprintf('<p class="message">%s</p>',
_t(
'RemoveOrphanedPagesTask.DELETEWARNING',
'Warning: These operations are not reversible. Please handle with care.'
)
)
));
} else {
$fields->push(new LiteralField(
'NotFoundLabel',
sprintf(
'<p class="message">%s</p>',
_t('RemoveOrphanedPagesTask.NONEFOUND', 'No orphans found')
)
));
}
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$form = new Form(
$this,
'SilverStripe\\Forms\\Form',
$fields,
new FieldList(
new FormAction('doSubmit', _t('RemoveOrphanedPagesTask.BUTTONRUN', 'Run'))
)
);
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if(!$orphans || !$orphans->count()) {
$form->makeReadonly();
}
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return $form;
}
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public function run($request) {
// @todo Merge with BuildTask functionality
}
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public function doSubmit($data, $form) {
set_time_limit(60*10); // 10 minutes
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if(!isset($data['OrphanIDs']) || !isset($data['OrphanOperation'])) return false;
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$successIDs = null;
switch($data['OrphanOperation']) {
case 'remove':
$successIDs = $this->removeOrphans($data['OrphanIDs']);
break;
case 'rebase':
$successIDs = $this->rebaseOrphans($data['OrphanIDs']);
break;
default:
user_error(sprintf("Unknown operation: '%s'", $data['OrphanOperation']), E_USER_ERROR);
}
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$content = '';
if($successIDs) {
$content .= "<ul>";
foreach($successIDs as $id => $label) {
$content .= sprintf('<li>%s</li>', $label);
}
$content .= "</ul>";
} else {
$content = _t('RemoveOrphanedPagesTask.NONEREMOVED', 'None removed');
}
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return $this->customise(array(
'Content' => $content,
'Form' => ' '
))->renderWith('BlankPage');
}
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protected function removeOrphans($orphanIDs) {
$removedOrphans = array();
$orphanBaseTable = DataObject::getSchema()->baseDataTable($this->orphanedSearchClass);
foreach($orphanIDs as $id) {
/** @var SiteTree $stageRecord */
$stageRecord = Versioned::get_one_by_stage(
$this->orphanedSearchClass,
Versioned::DRAFT,
array("\"$orphanBaseTable\".\"ID\"" => $id)
);
if($stageRecord) {
$removedOrphans[$stageRecord->ID] = sprintf('Removed %s (#%d) from Stage', $stageRecord->Title, $stageRecord->ID);
$stageRecord->delete();
$stageRecord->destroy();
unset($stageRecord);
}
/** @var SiteTree $liveRecord */
$liveRecord = Versioned::get_one_by_stage(
$this->orphanedSearchClass,
Versioned::LIVE,
array("\"$orphanBaseTable\".\"ID\"" => $id)
);
if($liveRecord) {
$removedOrphans[$liveRecord->ID] = sprintf('Removed %s (#%d) from Live', $liveRecord->Title, $liveRecord->ID);
$liveRecord->doUnpublish();
$liveRecord->destroy();
unset($liveRecord);
}
}
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return $removedOrphans;
}
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protected function rebaseHolderTitle() {
return sprintf('Rebased Orphans (%s)', date('d/m/Y g:ia', time()));
}
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protected function rebaseOrphans($orphanIDs) {
$holder = new SiteTree();
$holder->ShowInMenus = 0;
$holder->ShowInSearch = 0;
$holder->ParentID = 0;
$holder->Title = $this->rebaseHolderTitle();
$holder->write();
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$removedOrphans = array();
$orphanBaseTable = DataObject::getSchema()->baseDataTable($this->orphanedSearchClass);
foreach($orphanIDs as $id) {
/** @var SiteTree $stageRecord */
$stageRecord = Versioned::get_one_by_stage(
$this->orphanedSearchClass,
'Stage',
array("\"$orphanBaseTable\".\"ID\"" => $id)
);
if($stageRecord) {
$removedOrphans[$stageRecord->ID] = sprintf('Rebased %s (#%d)', $stageRecord->Title, $stageRecord->ID);
$stageRecord->ParentID = $holder->ID;
$stageRecord->ShowInMenus = 0;
$stageRecord->ShowInSearch = 0;
$stageRecord->write();
$stageRecord->doUnpublish();
$stageRecord->destroy();
//unset($stageRecord);
}
/** @var SiteTree $liveRecord */
$liveRecord = Versioned::get_one_by_stage(
$this->orphanedSearchClass,
'Live',
array("\"$orphanBaseTable\".\"ID\"" => $id)
);
if($liveRecord) {
$removedOrphans[$liveRecord->ID] = sprintf('Rebased %s (#%d)', $liveRecord->Title, $liveRecord->ID);
$liveRecord->ParentID = $holder->ID;
$liveRecord->ShowInMenus = 0;
$liveRecord->ShowInSearch = 0;
$liveRecord->write();
if(!$stageRecord) {
$liveRecord->doRestoreToStage();
}
$liveRecord->doUnpublish();
$liveRecord->destroy();
unset($liveRecord);
}
if($stageRecord) {
unset($stageRecord);
}
}
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return $removedOrphans;
}
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/**
* Gets all orphans from "Stage" and "Live" stages.
*
* @param string $class
* @param array $filter
* @param string $sort
* @param string $join
* @param int|array $limit
* @return SS_List
*/
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public function getOrphanedPages($class = 'SilverStripe\\CMS\\Model\\SiteTree', $filter = array(), $sort = null, $join = null, $limit = null) {
// Alter condition
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$table = DataObject::getSchema()->tableName($class);
if(empty($filter)) {
$where = array();
} elseif(is_array($filter)) {
$where = $filter;
} else {
$where = array($filter);
}
$where[] = array("\"{$table}\".\"ParentID\" != ?" => 0);
$where[] = '"Parents"."ID" IS NULL';
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$orphans = new ArrayList();
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foreach(array(Versioned::DRAFT, Versioned::LIVE) as $stage) {
$table .= ($stage == Versioned::LIVE) ? '_Live' : '';
$stageOrphans = Versioned::get_by_stage(
$class,
$stage,
$where,
$sort,
null,
$limit
)->leftJoin($table, "\"$table\".\"ParentID\" = \"Parents\".\"ID\"", "Parents");
$orphans->merge($stageOrphans);
}
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$orphans->removeDuplicates();
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return $orphans;
}
}