Elgg\Groups\Upgrades\GroupIconTransfer::isRequired PHP Метод

    public function isRequired()
    {
        $groups = elgg_get_entities_from_metadata(['types' => 'group', 'metadata_names' => 'icontime']);
        if (empty($groups)) {
            return false;
        }
        $group = array_pop($groups);
        $sizes = elgg_get_icon_sizes('group', $group->getSubtype());
        $dataroot = elgg_get_config('dataroot');
        $dir = (new \Elgg\EntityDirLocator($group->owner_guid))->getPath();
        $prefix = 'groups/';
        // Check whether there are icons that are still saved under the
        // group's owner instead of the group itself.
        foreach ($sizes as $size => $opts) {
            $filename = "{$group->guid}{$size}.jpg";
            $filestorename = "{$dataroot}{$dir}{$prefix}{$filename}";
            if (file_exists($filestorename)) {
                // A group icon was found meaning that the upgrade is needed.
                return true;
            }
        }
        return false;
    }