silverstripe-blog/src/Model/BlogPostFilter.php

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<?php
namespace SilverStripe\Blog\Model;
use SilverStripe\Admin\LeftAndMain;
use SilverStripe\Control\Controller;
use SilverStripe\Core\Convert;
use SilverStripe\ORM\DataExtension;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\DataQuery;
use SilverStripe\ORM\FieldType\DBDatetime;
use SilverStripe\ORM\Queries\SQLSelect;
use SilverStripe\ORM\Versioning\Versioned;
use SilverStripe\Security\Permission;
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/**
* This is responsible for filtering only published posts to users who do not have permission to
* view non-published posts.
*
* @package silverstripe
* @subpackage blog
*/
class BlogPostFilter extends DataExtension
{
/**
* Augment queries so that we don't fetch unpublished articles.
*
* @param SQLQuery $query
*/
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public function augmentSQL(SQLSelect $query, DataQuery $dataQuery = null)
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{
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$stage = Versioned::get_stage();
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if (Controller::curr() instanceof LeftAndMain) {
return;
}
if ($stage == 'Live' || !Permission::check('VIEW_DRAFT_CONTENT')) {
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$query->addWhere(sprintf(
'"PublishDate" < \'%s\'',
Convert::raw2sql(DBDatetime::now())
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));
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}
}
/**
* {@inheritDoc}
*
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* This is a fix so that when we try to fetch subclasses of BlogPost, lazy loading includes the
* BlogPost table in its query. Leaving this table out means the default sort order column
* PublishDate causes an error.
*
* @see https://github.com/silverstripe/silverstripe-framework/issues/1682
*
* @param SQLSelect $query
* @param DataQuery $dataQuery
* @param DataObject $dataObject
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*/
public function augmentLoadLazyFields(SQLSelect &$query, DataQuery &$dataQuery = null, $dataObject)
{
$dataQuery->innerJoin(
DataObject::getSchema()->tableName(BlogPost::class),
'"SiteTree"."ID" = "BlogPost"."ID"'
);
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}
}