pmjones

<?php
class DiscussionRepository
{
    public function __construct(DiscussionMapper $mapper) {...}

    public function fetchDiscussion($id)
    {
        $record = $this->mapper->select(['discussion_id' => $id])
            ->with(['author']);
        return $this->newDiscussion($record);

pmjones

// given that you have created UserMapper and AddressMapper,
// and set up a 1:1 relationship from UserMapper to AddressMapper named 'address':

$atlas
    ->select(UserMapper::CLASS) // "FROM user"
    ->joinWith('address') // the name of the relationship field
    ->cols([
        'user.id AS id',
        'user.name AS name',
        'address.id AS address_id', // aliased using the relationship field name

pmjones

<?php
/**
 *
 * This file is part of Atlas for PHP.
 *
 * @license http://opensource.org/licenses/mit-license.php MIT
 *
 */
declare(strict_types=1);