cx-newsletter/components/11-group.php

<?php

namespace cx_newsletter;

class group
extends database_item
implements database_item_interface {
    public ?string $name = null;

    public function is_complete() : bool {
        return $this->name !== null;
    }

    public function prepare_name(string $name) : void {
        $name = str_replace(' ', '_', $name);
        $name = strtolower($name);

        $this->name = $name;
    }
}