<?php 
use Phalcon\Mvc\Model;

class Roles extends Model
{
    public $id;
    public $name;

    public function initialize()
    {
        $this->hasManyToMany(
            'id',
            'RolePermissions',
            'role_id', 'permission_id',
            'Permissions',
            'id',
            ['alias' => 'permissions']
        );
    }
}
?>