silverstripe-blog/code/extensions/BlogFilter.php

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<?php
/**
* This class is responsible for filtering the SiteTree when necessary and also
* overlaps into filtering only published posts.
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*
* @package silverstripe
* @subpackage blog
*
* @author Michael Strong <github@michaelstrong.co.uk>
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*
**/
class BlogFilter extends Lumberjack {
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/**
* Augments (@link Hierarchy::stageChildren()}
*
* @param $staged DataList
* @param $showAll boolean
**/
public function stageChildren($showAll = false) {
$staged = parent::stageChildren($showAll);
if(!$this->shouldFilter()
&& in_array(get_class($this->owner), ClassInfo::subClassesFor("Blog"))
&& !Permission::check("VIEW_DRAFT_CONTENT")
) {
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// Get the current stage.
$stage = Versioned::current_stage();
if($stage == "Stage") $stage = "";
else $stage = "_" . Convert::raw2sql($stage);
// Filter published posts
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$dataQuery = $staged->dataQuery()
->innerJoin("BlogPost", '"BlogPost' . $stage . '"."ID" = "SiteTree' . $stage . '"."ID"')
->where('"PublishDate" < \'' . Convert::raw2sql(SS_Datetime::now()) . '\'');
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$staged = $staged->setDataQuery($dataQuery);
}
return $staged;
}
/**
* Augments (@link Hierarchy::liveChildren()}
*
* @param $staged DataList
* @param $showAll boolean
**/
public function liveChildren($showAll = false, $onlyDeletedFromStage = false) {
$staged = parent::liveChildren($showAll, $onlyDeletedFromStage);
if(!$this->shouldFilter()
&& in_array(get_class($this->owner), ClassInfo::subClassesFor("Blog"))
&& !Permission::check("VIEW_DRAFT_CONTENT")
) {
// Filter publish posts
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$dataQuery = $staged->dataQuery()
->innerJoin("BlogPost", '"BlogPost_Live"."ID" = "SiteTree"_"Live"."ID"')
->where('"PublishDate" < \'' . Convert::raw2sql(SS_Datetime::now()) . '\'');
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$staged = $staged->setDataQuery($dataQuery);
}
return $staged;
}
}