VideoGroup.php

<?php

namespace Dynamic\HTML5Video\Pages;

use Page;
use SilverStripe\ORM\ArrayList;
use SilverStripe\ORM\DataList;

/**
 * Class VideoGroup
 * @package Dynamic\HTML5Video\Pages
 */
class VideoGroup extends Page
{
    /**
     * @var bool
     */
    protected static $include_child_groups = true;
    /**
     * @var array
     */
    private static $allowed_children = [
        VideoGroup::class,
        Video::class,
    ];
    /**
     * @var int
     */
    private static $page_length = 12;
    /**
     * @var string
     */
    private static $pagination_get_var = 's';
    /**
     * @var string
     */
    private static $description = 'Videos Landing Page';

    /**
     * @var string
     */
    private static $table_name = 'VideoGroup';

    /**
     * Method that returns a DataList of all
     * Video pages in the current VideoGroup
     * and all child VideoGroup pages.
     * Note: this isn't recursive through child
     * VideoGroup pages of the current VideoGroup
     * page.
     *
     * @access public
     * @param bool $all
     *
     * @return DataList
     */
    public function getVideoList($all = false)
    {
        $groupIDS = $this->getVideoGroupIDS($all);
        $groupIDS[] = $this->ID;

        return Video::get()->filter('ParentID', $groupIDS);
    }

    /**
     * Method that returns an array of ID's
     * of the VideoGroup pages beneath the current one
     *
     * @access public
     * @param bool $all
     *
     * @return array
     */
    public function getVideoGroupIDs($all = false)
    {
        return $this->getChildGroups($all)->column('ID');
    }

    /**
     * Method that returns child VideoGroup pages.
     * By default it only shows those with ShowInMenus
     * set to true, but can be overridden to show all
     * VideoGroup children regardless of ShowInMenus.
     *
     * @param bool $all
     *
     * @return ArrayList|DataList
     */
    public function getChildGroups($all = false)
    {
        return ($all === false)
            ? $this->Children()->filter('ClassName', VideoGroup::class)
            : $this->AllChildren()->filter('ClassName', VideoGroup::class);
    }
}