silverstripe-blog/code/BlogLeftMainExtension.php

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<?php
/**
* Influences the page list behaviour of blog entries in the CMS.
* Adds author and "post date" fields.
*/
class BlogLeftMainExtension extends Extension {
function updateListView($listView) {
$parentId = $listView->getController()->getRequest()->requestVar('ParentID');
$parent = ($parentId) ? Page::get()->byId($parentId) : new Page();
// Only apply logic for this page type
if($parent && $parent instanceof BlogHolder) {
$gridField = $listView->Fields()->dataFieldByName('Page');
if($gridField) {
// Sort by post date
$list = $gridField->getList();
$list = $list->leftJoin('BlogEntry', '"BlogEntry"."ID" = "SiteTree"."ID"');
$gridField->setList($list->sort('Date', 'DESC'));
// Change columns
$cols = $gridField->getConfig()->getComponentByType('GridFieldDataColumns');
if($cols) {
$fields = $cols->getDisplayFields($gridField);
$castings = $cols->getFieldCasting($gridField);
// Add author to columns
$fields['Author'] = _t("BlogEntry.AU", "Author");
// Add post date and remove duplicate "created" date
$fields['Date'] = _t("BlogEntry.DT", "Date");
$castings['Date'] = 'SS_Datetime->Ago';
if(isset($fields['Created'])) unset($fields['Created']);
$cols->setDisplayFields($fields);
$cols->setFieldCasting($castings);
}
}
}
}
}