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<?php |
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namespace SilverStripe\VersionedAdmin\Controllers; |
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use SilverStripe\CMS\Controllers\CMSPageHistoryController; |
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use SilverStripe\CMS\Model\SiteTree; |
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use SilverStripe\Control\HTTPRequest; |
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use SilverStripe\Core\Extensible; |
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use SilverStripe\Core\Injector\Factory; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\Versioned\Versioned; |
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/** |
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* The history controller factory decides which CMS history controller to use, out of the default from the |
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* silverstripe/cms module or the history viewer controller from this module, depending on the current page type |
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*/ |
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class HistoryControllerFactory implements Factory |
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{ |
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use Extensible; |
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public function create($service, array $params = array()) |
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{ |
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// If no request is available yet, return the default controller |
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if (!Injector::inst()->has(HTTPRequest::class)) { |
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return new CMSPageHistoryController(); |
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} |
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$request = Injector::inst()->get(HTTPRequest::class); |
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$id = $request->param('ID'); |
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if ($id) { |
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// Ensure we read from the draft stage at this position |
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$originalStage = Versioned::get_stage(); |
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Versioned::set_stage(Versioned::DRAFT); |
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$page = SiteTree::get()->byID($id); |
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Versioned::set_stage($originalStage); |
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if ($page && $this->isEnabled($page)) { |
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return Injector::inst()->create(CMSPageHistoryViewerController::class); |
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} |
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} |
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// Injector is not used to prevent an infinite loop |
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return new CMSPageHistoryController(); |
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} |
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/** |
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* Only activate for pages that have a history viewer capability applied. Extensions can provide their |
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* own two cents about this criteria. |
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* |
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* @param SiteTree $record |
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* @return bool |
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*/ |
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public function isEnabled(SiteTree $record) |
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{ |
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$enabledResults = array_filter($this->extend('updateIsEnabled', $record)); |
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return (!empty($enabledResults) && max($enabledResults) === true); |
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} |
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} |
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silverstripe /
silverstripe-versioned-admin
