silverstripe-blog/code/compat/pages/BlogHolder.php

<?php

/**
 * @deprecated since version 2.0
 */
class BlogHolder extends BlogTree implements MigratableObject {
	/**
	 * @var string
	 */
	private static $hide_ancestor = 'BlogHolder';

	/**
	 * @var array
	 */
	private static $db = array(
		'AllowCustomAuthors' => 'Boolean',
		'ShowFullEntry' => 'Boolean',
	);

	/**
	 * @var array
	 */
	private static $has_one = array(
		'Owner' => 'Member',
	);

	/**
	 * {@inheritdoc}
	 */
	public function canCreate($member = null) {
		return false;
	}


	//Overload these to stop the Uncaught Exception: Object->__call(): the method 'parent' does not exist on 'BlogHolder' error.
	public function validURLSegment() {
		return true;
	}
	public function syncLinkTracking() {
		return null;
	}

	/**
	 * {@inheritdoc}
	 */
	public function up() {

		$published = $this->IsPublished();

		if($this->ClassName === 'BlogHolder') {
			$this->ClassName = 'Blog';
			$this->RecordClassName = 'Blog';
			$this->write();
		}

		if($published){
			$this->publish('Stage','Live');
			$message = "PUBLISHED: ";
		} else {
			$message = "DRAFT: ";
		}
		
		return $message . $this->Title;
	}
}

/**
 * @deprecated since version 2.0
 */
class BlogHolder_Controller extends BlogTree_Controller {

}