silverstripe-framework/tasks/MigrateFileTask.php

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<?php
use SilverStripe\ORM\DB;
/**
* Migrates all 3.x file dataobjects to use the new DBFile field.
*
* @package framework
* @subpackage filesystem
*/
class MigrateFileTask extends BuildTask {
protected $title = 'Migrate File dataobjects from 3.x';
protected $description
= 'Imports all files referenced by File dataobjects into the new Asset Persistence Layer introduced in 4.0';
public function run($request) {
$migrated = FileMigrationHelper::singleton()->run();
if($migrated) {
DB::alteration_message("{$migrated} File DataObjects upgraded", "changed");
} else {
DB::alteration_message("No File DataObjects need upgrading", "notice");
}
}
}